The following files were copied from the repository 
https://github.com/dwaithe/FCS_point_correlator

- correlation_methods.py
- correlation_objects.py
- fitting_methods.py
- import_methods.py

The following changes were performed:
- `fib4.pyx`
  Removed and replaced with fib4.py
- `correlation_objects.py`
  Line 7 was commented out:
  #from lmfit import minimize, Parameters,report_fit,report_errors, fit_report
- `correlation_methods.py`
  Support for NumPy 0.13 was added:
  - https://github.com/FCS-analysis/PyCorrFit/commit/132991c7a2950c0c380c6df6edf433f61911a6db
  - https://github.com/dwaithe/FCS_point_correlator/issues/2
