v0.5.3

- [featureCompiler] Only writeFeatures_mark if neither mark or mkmk is present.
- [install_requires] Update minimum required fonttools to 3.13.0.

v0.5.2

Fixed issue with USE_MY_METRICS component flag being incorrectly set when convertCubics=True (#136).

v0.5.1

Fixed makeotf syntax error with empty mkmk feature block (#130).

v0.5.0

Support Monotype/MTI feature files embedded in UFOs