WIP ENH: Add TFCE
ENH: Add haircut support
ENH: Speeding up TFCE, cleaning up code
ENH: Faster
ENH: Adding example
STY: Cleanup
ENH: Adding more tests
FIX: Fix example
ENH: Better examples, testing, and fixes
FIX: Minor fix
ENH: Updating whats new
ENH: Better handling of bad thresholding
ENH: as_data_frame method for STC objects
CLN: refactor + standardize data_frame internals
CLN: add pandas checking function
FIX: addresses @mluessies concerns

+ fix test_raw doc
FIX: ImportError / RuntimeError
ENH: what's new