Visual Upgrades Release
This release attempts to address some visual issues in the HTML output
Also introduces Percy.io to the test suite, for visual regression testing
Fixes:
- star symbols now display text version (fixes #16)
- some star symbols removed that break in Percy (math symbols)
- some star symbols added (ASCII puncutation)
- fix bug where charts where len(col) > len(star) presented duplicate legend blocks
Changes:
- use latest python for testing only (for now, to reduce percy costs)
- outputted image name is now the stem name (fixes issues with buffered output)
- outputted color now shows length of legend, and param input