Merge pull request #378 from molstar/ar-bonds

CHANGELOG.md

docs/interesting-pdb-entries.md

src/mol-model-formats/structure/mol2.ts

src/mol-model-formats/structure/property/bonds/chem_comp.ts

src/mol-model/structure/structure/unit.ts

src/mol-model/structure/structure/unit/resonance.ts

src/mol-model/structure/structure/unit/rings/compute.ts

src/mol-repr/structure/visual/bond-intra-unit-cylinder.ts

src/mol-repr/structure/visual/bond-intra-unit-line.ts

src/mol-repr/structure/visual/util/bond.ts