Release v0.2.2

[Sjoerd-Bo3]

Bring in updates from dev and update version number to 0.2.2.

Changes since last release are:

• Fix a broken link for Discord in CODE_OF_CONDUCT.md and README.md - @tonypartridge #412
• Modify rounding from .down to .halfUp - @MikePlante1 #398
• Update the submodules to bring in fixes and updates for CGM and Pump Managers and some screen views - @marionbarker

  338 #413 #357

  • Refer to PR https://github.com/nightscout/Trio/pull/424 for submodule update details
• Improve the logging of oref - @mkellerman #331
• Glucose source unit is now fixed in CGM notifications - @dabear #429

Thank you for the contributions: @mkellerman @dabear @tonypartridge @MikePlante1 @dnzxy @marionbarker @bjornoleh