Support older players with incomplete data

[andrewsayre]

Description:

Some older HEOS devices that cannot be updated to the latest firmware version do not report complete player data (such as version, and ip_address, among others). While those devices will likely have other compatibility problems, this change modifies the library to still successfully load them. Adds a new property supported_version to indicate if the version is fully supported by the library.

Checklist:

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• Tests have been added/updated. No exclusions in .coveragerc permitted.
• README.MD updated (if necessary)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (00fc347) to head (fac5cac).
Report is 3 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff            @@
##               dev      #102   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           22        23    +1     
  Lines         1978      2008   +30     
=========================================
+ Hits          1978      2008   +30     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.