Yogit

* Add `yogit ct list` command
* Add `--date` arg to `yogit scrum report` command
* Add indentation ability to `yogit scrum report`
* Print pretty bullet points in generated scrum report
* Improve documentation

* Replace `yaspin` by `Halo` dep to handle spinner: better handling of pipes and redirects

* Tried `yogit` on Windows Terminal and workaround a spinner issue
* Print count little by little if request is big

* Fix missing `packaging` dependency

* See if pull requests are conflicted in `yogit pr list`
* Improve `yogit scrum report` UX and make it robust to network access failure
* Shorten PR titles in tabulated results (max 50 chars)

* Add update available check