Cromwell-tools

- Add backward compatibility support for Python3.5 (fuego0607 )

- Add a script for workflow task runtime diagnostics.
- Switch to use Github Actions for CI/CD from Travis CI.
- Add response object to HTTPError raised by `cromwell_tools.api`. (kgalens)
- Fix an issue that the CLI errors out when no arguments are provided after `cromwell-tools`.

Implemented patch-labels for API

- Fix a critical bug with the `cromwell-tools` CLI.

- Fix an issue with Travis CI config YAML introduced in the release `v2.2.1`.

**A critical bug with the CLI is identified with this release, please move away from this release!**

- Update the Travis build badge. (lbergelson)
- Fix Github linguist detection.
- Fix a typo in `setup.py` file.
- Switch to use Python3 Type Annotations everywhere and update the docstrings accordingly.
- Automate the PyPI release process with Travis CI.

**A critical bug with the CLI is identified with this release, please move away from this release!**