2019-03-31 meld 3.20.1

Fixes:

• Fix bad comparison highlighting with VT characters (Kai Willadsen)
  

• Fix folder comparison display with >2G files (Kai Willadsen)
  

• Fix support for missing folders in folder comparison (Kai Willadsen)
  

• Handle trash-related errors with NFS mounts (Kai Willadsen)
  

• Add release metadata to appstream data (Kai Willadsen)

• Issues fixed: 268, 295

Translations:

• Anders Jonsson (sv)
  
• Balázs Úr (hu)
  
• Daniel Mustieles (es)
  
• Marek Cernocky (cs)
  
• Ryuta Fujii (ja)
  
• Wolfgang Stöggl (de)