Merge pull request #196 from molstar/sequence-mapping

CHANGELOG.md

src/mol-model-props/sequence/best-database-mapping.ts

src/mol-model-props/sequence/themes/best-database-mapping.ts

...odel/structure/structure/util/superposition-db-mapping.ts

src/mol-plugin-ui/structure/superposition.tsx

src/mol-plugin/behavior/dynamic/custom-props.ts

...or/dynamic/custom-props/sequence/best-database-mapping.ts

src/mol-plugin/spec.ts