Release v1.5: Enhanced MIME type detection with security fixes.

Start of development for release 1.6.

Release v1.4: Add deterministic boundary feature for reproducible mim…

…eogram output.

Start development for v1.5.

Internals update to lock some dependency versions.

Candidate 0 for release 1.3.

Start of release 1.4 development.

Several bugfixes and minor feature.

Several bugfixes and minor feature.

Start of release 1.3 development.