Version 0.7.3 Released

Release patch version 0.7.3:

• Move docs to GitHub Wiki (rmax#224)
• Update tox and support dynamic tests (rmax#233, rmax#234, rmax#235, rmax#237, rmax#244, rmax#246, rmax#247)
• Update support for json data (rmax#223, rmax#240)
• Refactor max idle time (rmax#220)
• Add support for python3.7~python3.10 (rmax#227, rmax#244)
• Deprecate python2.x support (rmax#227, rmax#231)