Mitreattack-python

Fixes

- Fix SVG export to hide disabled techniques when hideDisabled is True [89](https://github.com/mitre-attack/mitreattack-python/issues/89)
- Fix SVG export to display platforms and legend items
- Fix parsing of link dividers in layer files [94](https://github.com/mitre-attack/mitreattack-python/issues/94)
- Fix issue with retrieving technique ATT&CK IDs when generating a Navigator layer from the taxii server [82](https://github.com/mitre-attack/mitreattack-python/issues/82)

Fixes

- Fix data component parsing in diffStix changelog script

Fixes

- Fix JSON support for diffStix changelog script

Improvements

- Add support for campaigns to the diffStix changelog script [93](https://github.com/mitre-attack/mitreattack-python/pull/93)

Fixes

- Fix SVG export functionality [74](https://github.com/mitre-attack/mitreattack-python/issues/74)

Fixes

- Finish switching from `outputDir` to `output_dir` (the breaking change broke ourselves! But this itself isn't a breaking change)