v0.9.3:
    - Fix dependencies.
v0.9.2:
    - Fix dependencies.
    - Fix test.
v0.9.1:
    - Fix dependencies.
v0.9.0:
    - Add management for database exceptions.
    - Update dependencies.
v0.8.2:
    - fix dependencies.
v0.8.1:
    - fix dependencies.
v0.8.0:
    - add support for table extraction from html file.
v0.7.5:
    - fix issue #6.
v0.7.4:
    - fix issue #3.
v0.7.3:
    - fix extacting xlsx files (xldr decated support for xlsx).
v0.7.2:
    - fix "(cx_Oracle.DatabaseError) ORA-12505: TNS:listener does not currently know of SID given in connect descriptor"
    - add parameter 'errors' to oracle.insert method
    - remove parameter 'encoding' from extractor.xls method
v0.7.1: upgrade pyaxis to version 0.3.1
v0.7.0:
    - upgrade pyaxis to version 0.3.0
    - documentation updates
v0.6.2:
    - change subprocess calls, locking the execution until subprocess ends.
    - fix error raised deleting SQL Loader output files.
    - refactor integration tests for oracle class.
v0.6.1: updated SQLAlchemy in requirements.txt to fix moderate security issues.
v0.6.0: added support for xlsx extraction.
v0.5.0: added limited support for Postgresql database.
v0.4.5: fixed dependencies in setup.py.
v0.4.4: added support for massively reading Px files from a given directory.
v0.4.3: added different encodings for csv and px in extractor px.
v0.4.2: added support for parametrized columns load in bulk insert and upsert.
