mkvalidator 0.5.2

• Display the filename at the end of the processing
• Add a --quick option to exit after the first error/warning
• Add new elements from IETF CELLAR group
• Deprecate more elements based on IETF CELLAR group
• fix crash with files that have no Segment
• fix crash on incomplete files
• fix crash on invalid ID
• fix bitrate display for high bitrate on large files