Continuous build

Build log: https://github.com/son-link/CD-Tray/actions/runs/6439854807

2.0 RC1

• Migrate from Python 2 and PyGTK+ to Python 3 and PyQt5
• Added notifications on change track
• Added option to search on the CDDB (Compact Disc Database) of gnudb for CD data and get album name, artist and track titles.
• Update Spanish translations