SmartHomeNG v1.4.1

Submodule plugins set to actual commit

• origin/rc_v1.4.1: (21 commits)
  Additions to release notes
  Release Prepeation
  Documentation fixes
  Documentation: Changed structure of release notes
  Documentation: Updated release notes
  lib.env.location: Catch some ephem exceptions
  Documentation changes
  documentation: Adopted new function to get shng version number
  lib.item: Corrected expansion of relative item references, if a list of strings was passed to the function instead of a string
  Corrected build of version string from git information
  Corrected build of version number for master branch
  Documentation changes
  Items: Source-filename is added to item definition; casting for itemtypes ‚dict‘ and ‚list‘ extended; bugfix for on_update and on_change
  Doku: added "
  Doku: added ","
  Doku: added renewal of nginx certificate
  Doku: changes to port mappings on router and to configuration on Pi
  Doku: removed not working link from nginx doku
  fix missing tzinfo with sunrise/sunset times
  Documentation: Set release date of v1.4
  ...