Peptacular

Added:
- score.py - a module for scoring peptide matches

Changes:
- made Fragment dataclass frozen

Removed:
- removed indexing code from mass.py

Added:
- Fragmenter.py - an easier to use peptide fragmenter (returns dataclasses)
- Internal fragment ion support

Changes:
- fixed bug with C-Term PTMs

Added:
- spans.py to handle generating peptide spans from cleavage site info
- masses.py to handle generating peptide masses from sequences

Removed:
- refseq module - was a dumb idea

Added:
- fragment ion
- peptide mass and mz functions

Changes
- converted peptide.py to sequence.py (makes more sense since proteins are also sequences of amino acids)

Added:
- license
- changelog
- documentation

Changes
- src-based layout
- pyproject.toml

Removed
- removed fasta module -> independent FastaFrames package
- calculate_peptide_mass(
- moved streamlit components to root

Added
- added semi, and non-enzymatic digestion