Upgraded LZ4 to r124.
Quashed most cython warnings.
Spell check.
Cleaned up some function name modifiers, related to block parallelization schemes.
Faster scalar shuffle algorithm.
Faster scalar 'trans_byte_bitrow'.
Faster scalar unshuffle.
Removed unused *unrolled* functions.
Removed unused *untrans_bit_byte* and *untrans_byte_elem* functions.
Wrapped openMP library calls in preprocessor directives checking for openMP.
Mostly documentation and comment cleanup.
Fixed up python doc strings.
Added licensing boilerplate to C files and documentation updates.
Minor changes.
Added regression tests.
Adaptively find regression test data.
Merge pull request #15 from kiyo-masui/clean_up

Clean up