Ofxstatement-french

Changed

- The generation af a unique OFX id did only return a counter in
case of duplicates
- The Readme mentions now my fork of the ofxstatement instead of
https://github.com/kedder/ofxstatement.git
- The __about__.py file outputs the version number and that is
used in the Makefile
- The Makefile depends now on GNU make for tagging a release

Added

- This Changelog
- The Readme mentions test_requirements.txt for installing test modules
- More checks concerning the content (dates with start and end
date exclusive) that may result in a ValidationError exception
- Casden accounts also supported
- Negative balances recognized
- Added Makefile for keeping the important operations together

Changed

- The date will now be the accounting date (DATE COMPTA) instead of operation date (DATE OPERATION).
- Handling of 29 february improved
- Improved handling of graphics in the PDF which transforms to a
description starting with F and whitespace.
- The BIC is also recognized if the line does not end with a BIC
followed by only whitespace (hence BIC<ws><number><ws><.+> is now
allowed)
- Better determination of the statement header.

Added

- Converting the French BanquePopulaire PDFs to an OFX file.