v0.3.0

Added

• Database.extract method to subset a database given a sequence of indices.
• Database.mask method to subset a database given a boolean mask.

Changed

• Replaced cpu-features library with archspec Python package for runtime detection of CPU features.

Fixed

• Segmentation fault in alignment reconstruction code for Needleman-Wunsch algorithm (#1).
• Erroneous error message in Database.search on invalid overflow value (#2).