v0.7.12

• Dot not remove existing files before overwrite to save time
• Disable taking ticket param for commands other than get/put/ls/cat
• Add no_root flag to get/put/bput/sync to not create root dir
• Fix bput to include empty dirs in the source
• Add delete flag to delete extra files in dest dir
• Fix hash mismatch bug when using hash algorithms other than md5
• Rework dest path generation