python-branca-0.4.0-bp156.3.1

- version update to 0.4.0
  - Dropped Python 2 support
  - Store html content in a data-html attribute (#66)
  - Colormap alpha #64
  - Fix caption being propagated in scale functions #62
  - Assert color type in color_brewer #52

- run the testsuite

- Initial version