style fixes
move EOS into sub-package, rework imports, cleanup, documentation
style fixes
fix endmember computation
fix table.py
add to documentation
include fixes
re-add old ferropericlase
remove quartz
fix tests
add missing files
remove tabs
nicer test output
Merge pull request #66 from tjhei/style_fixes

- python style fixes
- rework package structure
- fix imports
- fix tests like table.py
- formatting
- some documentation