Keka v1.1.9

• Updated PLZIP from 1.6 to 1.8 (Thanks to Antonio Diaz Diaz)
• Updated LZIP from 1.19 to 1.21-rc1 (Thanks to Antonio Diaz Diaz)
• Using PLZIP instead of LZIP by default
• Always keep original extension in compression only formats (like GZ, BZ2, XZ and LZ)
• Volume names for parted files can be customized in the save dialog (Thanks to @puciak) #327
• Preventing mounting file access bookmarked external volumes
• Added Greek translation (Thanks to Bas) #180
• Enhanced English translation (Thanks to @ffffwh and @gingerbeardman) #346
• Simplified Chinese translation updated (Thanks to @maxsky) #343