DEV-79 | release v0.3.0: update release.rst
DEV-79 | release v0.3.0: update docs version
DEV-79 | release v0.3.0: update getting_started.rst
DEV-79 | release v0.3.0: update CHANGELOG
DEV-79 | release v0.3.0: update README, release.rst
DEV-79 | release v0.3.0: fix markdown link on CHANGELOG
Merge branch 'tasks/DEV-79-release-v0.3.0' into releases/0.3.0