Merge pull request #507 from MadCatX/add_pyramid_labels

CHANGELOG.md

examples/1bna_confal_pyramids.cif

src/extensions/dnatco/confal-pyramids/behavior.ts

src/extensions/dnatco/confal-pyramids/color.ts

src/extensions/dnatco/confal-pyramids/property.ts

src/extensions/dnatco/confal-pyramids/representation.ts

src/extensions/dnatco/confal-pyramids/types.ts

src/extensions/dnatco/confal-pyramids/util.ts