Change default tolerance to 0.6.
Add circle.yml.
Switch order of installation process.
Remove matplotlib from requirements.txt
Set pip install to quiet mode.
More fixes to circle file.
Improve circle test coverage.
Scipy can't be pip installed.
Remove INCAR tag checking.
Fix doc for get_refined_structure. Switch to returning a sorted structure.
Add unittest.
Fix dangerous bug in cifio of Rhom structures.
Clean up CifParser a little.
Update release 2.5.5
2.6 dev.
Add Prim and Conv unittest for cifio.
Remove redundant method in lattice.
Merge branch 'master' into pourbaix