SACA - put_substr1 base
SACA - generalized all routines over T
SACA - Implemented Constructor. Debugged to actually get abracadabra running.
Updated for the latest rust-compress, switched the suffix back to u32
Using BWT iterators from rust-compress now.
Updated for the latest rust. Roundtrips enabled in tests.
Merge pull request #1 from kvark/a7

SACA - A7 variant instead of saca-k