Jira-agile-toolbox

What's Changed
* copy_fix_version_supports_versions_accross_projects by studioj in https://github.com/studioj/jira-agile-toolbox/pull/18


**Full Changelog**: https://github.com/studioj/jira-agile-toolbox/compare/0.0.11...0.0.12

Adding capability to add labels to all subitems in an epic
Adding capability to retrieve all subitems in an epic

adding documentation at read the docs https://jira-agile-toolbox.readthedocs.io/