v0.4.0

Version 0.4.0

Commits

• [1fc2aa5] Merge pull request #214 from materialsproject/r2scan
• [ccfe9f7] ensure formula_pretty in projected doc
• [37793b3] negate boolean for validity
• [9d697e0] ensure subtracting sets
• [4220212] Add test for R2SCAN
• [07dcb4a] Add R2SCAN to run_types
• [05a6292] remove enums
• [5c699cc] ignore enums
• [4554590] fix overflowing distinct
• [7b9627f] Updated CHANGELOG.md