PEPMatch 0.9.0

First real stable PEPMatch release.

Since v0.8.0:

• Completely refactored all of the codebase for better maintainability and readability
• Unit tests for exact match, mismatch, and best match w/ GitHub workflows
• Benchmarking portion works for all methods
• Added feature to search discontinuous epitopes
• Improve regex pattern matching for FASTA header extraction
• Preprocessing option for Redis, to test for speed
• Many bug fixes for outputting results