Iconipy

* Added a PyInstaller hook to ensure the assets (icon fonts and metadata) are included in the frozen application.
* Introduced three new icon sets: microns, typicons, and ligature_symbols.
* Added a new property variable, **icon_sets_available**, which contains a list of all available icon sets.

**Full Changelog**: https://github.com/digidigital/iconipy/compare/v0.3.2...v0.4.0

Bugfixes, new export options & demo code

This is the first release on Github. :)