Version 3.4.6

P3D v5: albar965/littlenavmap#512

• Added P3D v5 for simulator detection.
• Adapted loading of BGL files to P3D v5 structure changes and added new records
  as well as new COM and other types.
• Enabled loading of add-on packages from "%USERPROFILE%\Documents\Prepar3D v5 Add-ons".

Other:

• Fixed error reporting in wind download and decoding. albar965/littlenavmap#480
• Chinese translation by John Liu.

Build:

• Added option to include common "../build_options.pro" file with defines for qmake.
  File is included automatically if it exists.