Pywavefront

* Add Python 3.7 support - PR 72
* Add missing material properties - PR 70
* Tweak README - PR 68

* Add Python 3 - PR 65

* Add binary cache - PR 63
* Fix handling of negative indices - PR 62
* Set up logger - PR 60
* Allow textures to load from anywhere - PR 59

* Fix README - PR 55
* Allow users to override material parser - PR 54
* Allow parser to create missing materials - PR 52
* Fix pypi markdown, tweak README - PR 51

* Revamp README - PR 48
* Fix various bugs - PR 47
* Cap shininess in visualization - PR 46
* Support different vertex formats + example - PR 43
* Detect vertex format, vertex color, and tests - PR 42

* Run all parser tests for gzip file - PR 40
* Revamp parser to prepare to support different vertex formats - PR 38
* Make dir available as instance attribute + tests - PR 33
* Use setuptools - PR 31