* V1.55.4
  * [sztaylor] fix cpu & gpu set_freq commands

* V1.55.3
  * fixed minor API typo
  * improvements from Arm to 2 CK modules: platform.cpu and platform.gpu:
    https://github.com/ctuning/ck-env/pull/113

* V1.55.2
  * removed two outdated modules
  * updated module:program
  * added incubator projects
  * prepared for release

* V1.55.0
  * Fixed missing CK modules
  * Removed module/crowdnode/tests (binary files)
  * Prepared new release

========================================================================================

* V1.50.1
  * Fixed missing CK modules

* V1.50.0 
  * Added stable modules from different CK repositories (Issue #120)

  * Added ck list_tags {CID} to list all tags from found entries (uses search function)
  * Converted python files to PEP8 style using autopep8
  * Fixed bug with "ck unzip repo" if ckr.zip if not present
  * Added command "get_default_repo" to print the path to the default repo inside CK

========================================================================================

* V1.17.0
  * Updated description of all CK APIs in Google format!
  * Added support to load YAML files via CK CLI: ck action @file.yaml
  * Fixed Yaml loader
  * Added support to download components with depenendecies from cKnowledge.io
  * Fixed issue when adding the "init" action to modules (this function always exists in CK modules).
    We create "new_init" function in such case.
  * Checking all function names in the CK module when adding a new action
  * Added simplified "ck init repo" to create a CK repository in the current directory
  * Added docs about "ck init repo"

* V1.15.0
  * Improved the integration with the open CK portal: https://cKnowledge.io
  * Fixed installation in virtual env / pip for Linux/Windows
  * Started working on a new Sphinx-based documentation
  * Check missing modules at cKnowledge.io
    (can be turned off by "ck set kernel --var.check_missing_modules=no")
  * Fixed ck.bat for Windows when CK is used from GitHub
  * Fixed ElasticSearch indexing error when index is empty
  * Fixed remote repo access
  * Added experimental mode to support multiple aliases for the same UID
    to be able to push renamed components to the cKnowledge.io portal
  * Started breaking CK kernel into sub modules:
    https://github.com/ctuning/ck/issues/107
  * Started improving ck scripts to automatically detect installation (Linux and Windows):
    https://github.com/ctuning/ck/issues/106
  * Added support to download missing components from cKnowledge.io

* V1.12.3
  * improved tests on Linux, MacOS and Windows
  * prototyped testing of the status of repositories (stable and warning)

* V1.12.2
  * fixed UTF-8 problem with README.md in setup.py

* V1.12.1
  * added first draft of the docs in the Sphinx format
  * fixed repo update
  * added backward compatibility for the search via ElasticSearch
  * do not ask for "web support" by default when adding actions
  * ck webhelp now shows published components at the CodeReef portal
  * ck webapi now shows module API at the CodeReef portal
  * Added "ck codereef <CID>" to show information about published components
    at the CodeReef portal
  * Allowed ' character in names of CK entries
  * Added 2020
  * Simplified Readme

* V1.11.4
  * fixed problem when ck-python.cfg contains non-existent python
  * fixed problem with allowed action_names 
    (should not start with number but can have numbers in the middle)
  * fixed problem with ElasticSearch when renaming entries
  * Added key "use_git_instead_of_https" to kernel cfg 
    to substitute https:// with git@ in repositories
  * fixed problem with pip installation using Python 2.7
    (thanks to Alex Redshaw from Arm)
  * added possibility to log all used CK entries to find out all dependencies

    turn on: ck set kernel --var.log_ck_entries={file}
    turn off: ck set kernel --var.log_ck_entries=""

* V1.11.3
  * minor clean up of the API doc
  * now copying default repo to $HOME/.ck/{version} to be able to always find it
  * added possibility to split dirs for the whole repo 
    (to be able to exchange repos with split directories)
  * added commands "private", "recache", "split_all_dirs" to ck add/update repo
  * added try/catch around encode/decode routines to better support non-UTF locale
  * can use wildcards when searching for UIDs
  * added repo_module_uoa to be able to execute module from a specific repository

* V1.11.2
  * fixed typo
  * added possibility to force index data for specific repos via local kernel meta:
    "index_repos":[list of repo UIDs and aliases]
  * bug fix for split directories if UID is used for an entry with alias
  * fixed link to CK slack channel
  * added zip_safe=False

* V1.11.1
  * fixed ck.bat on Windows (if CK_ROOT has spaces)
  * added possibility to add sub-directory for all entries of a given module based on first N characters of an entry name;
    this is needed to handle millions of entries;
    it can be configured via local kernel meta: "split_dirs":{"module UOA":N} 
  * improved "ck help" function
  * added support for the latest ElasticSearch via Python client
  * improved CK search via ElasticSearch
  * added possibility to auto convert all entry names to lower case;
    it can be configured via local kernel meta: "force_lower":"yes"
  * added check for allowed entry names;
    it can be configured as RE via local kernel meta: 
    "allowed_entry_names": "^[A-Za-z0-9_@. -]*$"
  * added check for allowed action names in modules;
    it can be configured as RE via local kernel meta: 
    "allowed_action_names": "^[A-Za-z_-]*$"
  * added possibility to index data for only specific modules via local kernel meta:
    "index_modules":[list of module UIDs and aliases]
  * removed AUTHORS.txt as non-standard (leaving CONTRIBUTIONS.txt)
  * added possibility to skip SSL certificate check for remote repositories
  * added CK kernel functions save_state(), restore_state, reinit
    to let multiple CK instances co-exist

* V1.10.3
  * fixed major bug with kernel version checking

* V1.10.2
  * fixed mistake in PyPi release

* V1.10.1
  * added support for setuptools
  * added report on Python executable used by CK
  * recording python executable to ck-python.cfg during installation -
    it can now be used by default when calling CK CLI
  * added experimental functionality to automatically download 
    missing components from cKnowledge.org.
    It is turned off by default. 
    To turn it on use "ck set kernel var.download_missing_components=yes"

* V1.9.9
  * fixed installation bug (non UTF-8 character)

* V1.9.8
  * improved OpenME to call CK in dynamic websites
  * added passing of $_SESSION, $_POST, $_GET to CK via OpenME
  * added "Access-Control-Allow-Origin=*" to module:web 
    to be able to access CK from local web pages
  * fixed CK execution with Anaconda python (Linux and MacOS) 
    when installed via pip
  * added possibility to change default repo 
    using "CK_DEFAULT_REPO" env var
  * added flag --module_version to use different Python module:
    (module{.{module_version}}.py)

* V1.9.7
  * allowed local widget to fetch data from cKnowledge.org (or other) website:
    https://github.com/ctuning/ck/pull/93
  * automatically print API of redirected functions (ck <action> <module> --help)
  * improved module API printing
  * added pypi download stats
  * fixed minor problem with "ck renew repo" - now takes already existing UID instead of generating a new one

* V1.9.6
  * fixed minor bug in "ck rm" when deleting entries only from allowed repos (for crowdsourcing)
  * fixed problem with wrong repo UID when repo is installed from zip archive
  * added flag --all to "ck zip" to archive all files including .git
  * fixed "ck add repo --zip" if zip contains Git repository (making it shared)

* V1.9.5
  * added "debug":"yes" to kernel for GitHub versions
  * fixed minor bug in detection of minimal CK kernel version
    (important since current python3-ck in official Ubunutu 17.04 is quite outdated: v1.7.2)
  * fixed tests to report the error detected by running ck.access() or equivalent
  * testfix: stop testing 3.5dev and nightly Python, but add 3.6 which everyone uses
  * improved auto-generation of a list of all modules and actions: 
    http://cKnowledge.org/shared-modules.html
  * made removal of \r in text files safer on Windows (across different Python versions)
  * added TARGET remark to all CK kernel functions to show target audience (end users vs CK kernel developers).
    Used in "ck list_kernel_functions misc".
  * improved recaching of repos (taking latest updates from .ckr.json into account)
  * blocked copying of repositories to avoid duplication of CK entries
  * added "ck python_version" to print Python version used by CK
  * now when calling ck without arguments, it will print just a short help

* V1.9.4
  * fixed minor bug when searching repo by UID when repo doesn't exist
  * added CK internal var "debug". If set to "yes", print error when CK entries are broken or ignore them (now default)
    See https://github.com/ctuning/ck-tensorflow/commit/c4ddfcde1baacf6bebb23f345735b38006be08d1#commitcomment-25230616

* V1.9.3 
  * fixed issue #80 (adding zip repo if starts with ~)
  * fixed issue #81 (when renaming entry with data_name==data_alias, change it to the new alias)
  * added flag --name (duplicate of --show_name) to "ck ls"
  * fixed issue #82 (detecting name of repo from the zip filename)
  * fixed repo renaming (now updates .ckr.json and recache repo properly)

* V1.9.2
  * added "ck cd {CK entry}" to open a new shell in a given CK entry
  * added ck.compare_dicts examples
  * fixed some self tests
  * added safe recording of JSON (even if some keys are not serializable)
  * printing user-friendly name (from info.json "data_name") when removing entries.
    Useful when deleting env entries (ck rm env:*)
  * added more user-friendly configuration of internal CK variables via
    $ ck set kernel
    $ ck set kernel var.install_to_env=yes
  * added safe deletion of CK entries with Git files on Windows
  * automated adding CK .zip repos without questions

* V1.9.1
  * added ck.debug_out(i) to print dict to console
  * fixed strange warnings for Python 3.5+ on Windows and Linux (when installed via pip)
  * fixed repo renewing on latest Windows (when access error to Git files)
  * added ck show repo to show git status of all repos
  * started highly experimental support for stable repos or different branches/checkouts
    (particularly useful for Artifact Evaluation to check out only stable repos)

* V1.8.7 
  * fixed major bug with default license/author (to avoid crashing when adding new module)
  * fixed minor bug in API when starting CK web service and viewing entry (wcid option)
  * allow ~ in an archive name when archiving CK entries using 'ck zip ...'

* V1.8.6
  * added direct update of kernel vars via CMD similar to Git. For example:

    $ ck setup kernel --var.default_license="See CK LICENSE.txt for licensing details"
    $ ck setup kernel --var.default_copyright="See CK COPYRIGHT.txt for copyright details"
    $ ck setup kernel --var.default_developer="cTuning foundation"
    $ ck setup kernel --var.default_developer_email="admin@cTuning.org"
    $ ck setup kernel --var.default_developer_webpage="http://cTuning.org"

  * added -f flag to force removal of entries (i.e. ck rm x:y -f) to be compatible
    with bash rm -f ...

  * added JSON sorting when viewing entries from CMD (via ck load x:y)

* V1.8.5 
  * do not crash if renewing repo while staying inside it
  * fixed bug in "system_with_timeout" (was always returning error) - required by ck-clsmith
  * added "skip_sort" to "select" and "select_uoa" functions
  * added cfg['internal_keys'] to be able to check them in input
  * fixed minor bug when @file.json from CMD not found

* V1.8.4
  * fixed 'ck status' and version comparison
  * minor fix when listing all modules in mediawiki format

* V1.8.3dev
  * fixed minor issue in ck.list_all_files() with 'limit' parameter

* V1.8.2
  * fixed bug in 'remove_action' in CK kernel
  * fixed issue in "run_and_get_stdout" on Windows
  * printing module UOA in square brackets when error (useful for debugging)
  * added 'shell' parameter to kernel 'run_and_get_stdout' function
    (needed for ck-crowdnode)
  * added 'eout' function to kernel to print to stderr
    (useful for ck-crowdnode-server)

* V1.8.1
  * added continuous integration via Travis (Linux) and AppVeyor (Windows)
  * added CoverAlls to measure test coverage
  * added possibility to skip listing of all modules from private repositories
  * fixed error in 'ck edit'
  * unitests added (we now support Python 2.7 and 3.3+)
  * added 'dump_json' instead of 'dumps_json'

* V1.7.4
  * extended run_and_get_stdout kernel function 
  * fixed problem in run_and_get_stdout (ValueError: I/O operation on closed file)
  * fixed problem with --help or --get_api from kernel

* V1.7.3
  * fixed rare bug when 'return' is non-integer in remote CK access (such as during crowd-tuning and crowd-testing)
  * fixed copying to clipboard on Windows
  * fixed __init__.py when using CK from scripts/ipython/jupyter (calling init())
  * added ck.jerr(r) - print error with raise KeyboardInterrupt for Jupyter Notebooks
  * fixed major problem with using CK without CK_ROOT env, i.e. from python scripts or Jupyter Notebooks
  * fixed minor problem with CK_ROOT env (when is not set but can be detected automatically)
  * added run_and_get_stdout function and fixed various problems with crowdtuning on MacOS 

* V1.7.2
  * added the --wfe_host and --wfe_host flags to "ck start web".
  * improved API when starting CK server and a browser at the same time ...
  * added info about Docker support in CK
  * simplified adding remote repo using --hostname --port --hostext
  * added possibility to describe repository for Artifact Evaluation
    using flag --describe (see http://cTuning.org/ae), i.e.
    ck add repo:my-artifact-pack --describe
  * return 16 when adding new entry (including repository) and it already exists
  * added often used 'load_yaml_file' and 'save_yaml_to_file' functions to kernel
  * changed yaml.dump to yaml.safe_dump
  * added --install option to "ck pull all (--kernel)" to install CK kernel as python module

* V1.7.1
  * fixing detection of CK installation even when ck is soft linked
  * changing remote-ck repo URL pointing to cknowledge.org 
    (after moving personal CK server to Azure cloud)
  * adding support for basic http authentication for remote repositories
  * adding automatic recaching of repositories if has remote access ...
  * adding support to automatically open web service and browser via
    "ck browser" (or "ck browser --template=<template>" with a given web template)
    similar to ipython notebook
  * adding possibility to open a given entry in a browser via
    "ck browser test:unicode" or browse entries via
    "ck browser dataset:" ...
  * fixing CK server vulnerability (action with ; can run various CMD commands)
  * fixing above vulnerability both in php and python ...

* V1.6.15
  * adding mode to skip tmp files/directories when downloading entry
  * fixing bug in entry downloader
  * adding __version__ to CK kernel
  * providing URLs where to download Git and Python for installation
  * automatically extracting repo name from URL string when pulling repos from GitHub via --url
  * added action 'show' to 'repo' module to be able to open browser 
    with an URL of a shared repository. For example, 'ck show repo:ck-autotuning'
  * Adding support function to get value from list without error if out of bounds (useful for sorting)
  * Before updating kernel from GitHub, check that it's a Git installation (noticed by Abdul Memon)

* V1.6.14
  * forgot to add cfg module to setup.py (preferred to generate new version)

* V1.6.13
  * adding 'ck cmd test' to let users understand CK command line -
    it will just print input as JSON ...
  * adding input print when creating dummy module to help
    users understand command line
  * checking if CK directory exists when updating kernel
  * can now generate new UID when renaming entires (--new_uid)
    to avoid collecting experiments from multiple users 
    with the same UID ...
  * can now add UID to alias when renaming entries (--add_uid_to_alias)
    to distinguish some shared entries with common alias ...
  * if adding json via CMD (@@key) and string is empty,
    convert it to {} (empty dict) rather than failing.
    Also add missing {}.
  * removing extra \n when entering JSON from CMD ...
  * slightly improving Readme (adding our latest position paper 
    about CK from DATE'16)
  * fixing issue with 'read-only' files on Windows 
    when removing a given repo completely
  * fixing issue when installing repository manually downloaded
    from GitHub (removing root directory), see issue #46
  * checking if git command line client is installed 
    when pulling shared repo 
  * improving listing of all modules and actions
  * now you can add tags from CMD when adding/updating entries (ck add dataset:xyz --tags=abc)
  * improving ck.list_all_files (avoid recursive symbolic directories, add path if needed)
  * added --quiet mode when creating new modules (to simplify procedure)
  * fixing small buy when detecting latest CK version (works even if non-integer value)
  * added support to pack files with multiple pattern (useful to transfer new solutions
    via Internet when crowdsourcing experiments)
  * adding unzip_file function (to pack and exchange solutions when crowdsourcing experiments)
  * fixing a minor bug when updating entries (do not set data_name to default if already exists)
  * adding function to create entry if doesn't exist when loading it
  * improving CK kernel version check
  * can now check minimal CK kernel version for any module (key "min_kernel_dep" in module cfg)
  * fixing bug when loading new module (replacing old cfg)
  * adding ck.type_long (set to long in Python 2.x and to int in Python 3.x) for compatibility
  * adding ck.safe_float and ck.safe_int (for safe sorting - used when sorting crowdtuning results)
  * fixing detection of a right Python version
  * adding 'renew repo' function to completely remove polluted and shared repository,
    and pull new one (Issue #12) 
  * adding support to forbid deleting in specific repos
    (useful only to aggregate information such as during crowdtuning)

* V1.6.12
  * adding CK_PYTHON env variable in ck script 
    to let user select required python version (python or python3)
  * automatically detecting python3 or python on Linux
  * fixing license of a php OpenME code - now the same as CK
    (tiny part to connect PHP-based web requests to CK)
  * adding 'find' function to 'repo' module and changing
    default behavior. Now "ck find repo:<name>" returns
    path to repository rather than to meta. To return
    path to meta, use "ck find repo:<name> --meta".
    Closes ticket #45
  * automatically detecting server host and port, if used!
    Closes ticket #38
  * adding zip action to CK kernel, to simplify archiving of entries, 
    i.e. "$ ck zip (repo wildcards:)module wild cards:<data wild cards>"
  * when copying entry, changing date and CK version (fixing #39)

* V1.6.11
  * improved installation documentation

* V1.6.10
  * fixing automatic detection of an installation directory
    when using pip install --user
  * adding ChangeLog file for backward compatibility with Debian
  * adding TODO.txt with a link to CK GitHub tickets

* V1.6.9
  * fixing/improving command line help

* V1.6.8
  * moving ck and ck.bat to 'scripts' in setup.py
  * moving condarecipe to external sources 
    (to prepare conda packages externally)
  * using $PYTHON on Linux

* V1.6.7
  * fixing 755 for bin/ck (for PIP installation)

* V1.6.6
  * Fixing PIP problem (when adding new modules to CK)
  * Removing Debian description (will be separate to make non-native package)

* V1.6.5
  * fixing port selection from CMD for CK web service
    (ck start web --port={PORT})
  * fixing bug in Python 3 for 'ck status'
  * improving help
  * fixing bug with pip installation on Anaconda for Windows
  * fixing bug with pip installation on Linux
  * adding CK_PYTHON to change interpreter on Linux (for example python3)

* V1.6.4
  * Support ISO and human readable time during search
  * Removed ckcd and added commands "ck cd" and "ck cdc" 
  * fixing print of correct host and port when changed via 'ck setup kernel --wfe'
  * adding support for 'pyperclip' to copy to clipboard
  * warn if more than one entry found when using 'cd' and 'cdc' commands 
  * improving execution procedure with timeout 
  * fixing problem with latest version check in 'status' 
    (also checking it via GitHub)

* V1.6.3
  * fixing Debian source package name to python-ck

* V1.6.2 
  * fixing length in Debian changelog

* V1.6.1
  * fixing bug when calling kernel actions while current path is in some CK entry

* V1.6.0
  * changing version standard

* V1.5.0917
  * proper support for DEBIAN packages

* V1.5.0916
  * major move of 'repo' directory to 'ck' to support standard Python packaging
  * major improvement of setup.py to support standard Python packaging
  * fixing web interface paths to support standard Python packaging
  * supporting Conda packaging (Anaconda Scientific Python)
  * adding alias 'ls' for 'list' command (suggested by Anton)

* V1.4.0909
  * fixing a few typos
  * adding system function with timeout possibility
     (useful for research in computer engineering where
      generated code may be buggy and result in infinite loops,
      i.e. during autotuning or compiler testing and bug detection)
  * ck where repo:<name> will print URL for remote repositories
     (suggested by Anton)
  * making text to select UIDs less ambiguous (asked by Anton)
  * fixing bug in flatten_dict while working with CLSmith
  * changing COPYRIGHT to COPYRIGHT.txt and LICENSE to LICENSE.txt

* v1.3.0824
  * fixing bug with repository recaching (when pulling dependent repositories)

* v1.3.0821
  * added listing of all modules and their actions in user-friendly format
  * added support to zip CK repositories in format suitable for BitTorrent
    (to optimize exchange of large artifacts)
  * improved functionality to update repo descriptions 
    and manage dependencies on other shared repositories
  * fixed a few tiny bugs
  * added support to create an entry from a given directory (importing directories)
  * added "input_json" function to kernel to input JSON from console ...
  * added option "@@@" to CMD to add JSON from console to input
  * exchanged "@@@" and "@@" in CMD for simplicity
  * improved 'edit' function with the possibility to edit not only 
      meta of an entry, but also description (via flag --edit_desc) -
      for example, useful to edit compiler flag description via
      $ ck pull repo:ck-autotuning
      $ ck edit compiler:gcc-49x
  * adding --min flag to ''load'' function to output 
    only desc and dict to console 
  * adding --without_files to avoid copying files 
    when copying/moving CK entries (useful
    to create templates for example for benchmarks
    or data sets)

# V1.2.0605, 2015-06-05 -- stable release
  (several extra features to improve autotuning)

  * save/load extra JSON files to/from entries
  * adding desc.json into .cm (collective meta) to describe API in flat format
  * adding dependencies to repos (automatically pull all related repos -
      useful to distribute repos with all packed artifacts to reproduce experiments from papers)
  * a few cosmetic fixes

# V1.2.0513, 2015-05-13 -- stable release 
  (no major problems found during past 2 months)

  * A few extensions and small bug fixes

# V1.1.0202, 2015-02-02 -- stable pre-release for collaborators

  * A few bug fixes

# V1.1.0201, 2015-02-01 -- stable pre-release for collaborators

  * Adding many user-friendly functions
  * Adding basic CK web browser. See demo: http://cknowledge.org/repo
  * Small bug fixes

# v1.0.1214.beta, 2014-12-14 -- stable pre-release for collaborators

# v0.1.140810, 2014-11-05 -- starting point

