v0.7.7

Updates

• Reworked YAML saving function to use Ruamel.yaml yaml.dump
• Merged 2 YAML saving buttons into 1 main button (standard banks and diffsinger banks both supports the yaml.org,2002:map yaml map formats)
• Add YAML validation when saving symbols as a template

Fixes

• preparation for saving/loading message window when saving files
• Code optimizations and fixes
• Update to Localizations