Support qBittorrent 4.4.0

[rmartin16]

Fixes #59

• Filter torrent info endpoint by tag - WebAPI: Provide filtering torrents by tag qbittorrent/qBittorrent#15152
• Add "Forced metadata downloading" state - Add "Forced metadata downloading" state qbittorrent/qBittorrent#15185
• Support per-torrent/per-category "download folder" - Redesign "Incomplete folder" feature qbittorrent/qBittorrent#15793

Release Checklist

• Bump version number
• Update qBittorrent version/link in docs
• Update CHANGELOG
• Update qBittorrent version/link in README

Update v4.4.0beta2 in conftest.py to v4.4.0 before merging.

[codecov]

Codecov Report

Merging #60 (2a61685) into master (41b9e28) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #60   +/-   ##
=======================================
  Coverage   99.77%   99.78%           
=======================================
  Files          14       14           
  Lines        1808     1839   +31     
  Branches      198      201    +3     
=======================================
+ Hits         1804     1835   +31     
  Partials        4        4           

Impacted Files	Coverage Δ
qbittorrentapi/definitions.py	100.00% <100.00%> (ø)
qbittorrentapi/torrents.py	100.00% <100.00%> (ø)

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[rmartin16]

qBittorrent released v4.4.0 rather quickly after merging qbittorrent/qBittorrent#15793....this merge introduced several changes to the web api...some likely unintended (see qbittorrent/qBittorrent#15969 as an example).

I normally try to smooth out qBittorrent API version differences.....but the change of the dictionary key savePath to save_path for torrents/categories stresses the ability for this client to cover that up because of the way HTTP responses are generically processed after getting them back from qBittorrent....so, I don't think I'll easily be able to change save_path back to savePath before returning the dictionary back to calling code.