INCATools/ontology-access-kit: v0.2.4

What's Changed xaf parsing enhancements by @cmungall in https://github.com/INCATools/ontology-access-kit/pull/473 add a subset of OAK logos to this repo by @nlharris in https://github.com/INCATools/ontology-access-kit/pull/478 delete from main folder (added to docs/logos) by @nlharris in https://github.com/INCATools/ontology-access-kit/pull/481 PHAF parser and tests added by @manulera in https://github.com/INCATools/ontology-access-kit/pull/476 add copies of logos to correct folder by @nlharris in https://github.com/INCATools/ontology-access-kit/pull/480 add "(OAK)" to title; add banner logo by @nlharris in https://github.com/INCATools/ontology-access-kit/pull/472 Adding basic abilities to work with CX and ndexbio as a backend by @cmungall in https://github.com/INCATools/ontology-access-kit/pull/479 New Contributors @manulera made their first contribution in https://github.com/INCATools/ontology-access-kit/pull/476 Full Changelog: https://github.com/INCATools/ontology-access-kit/compare/v0.2.2...v0.2.