csv2txf 0.2

Major new features:

• This release adds support for TD Ameritrade.

Minor changes:

• Added a summary output; use csv2txf.py --outfmt=summary [...] to see it
  • see sample output files in testdata/*.summary.out
• Support for pip and pip3 binaries for installing autopep8 via Makefile
• Cleanups of testing scripts and testdata regen scripts