v0.2.0

• Added support for tag implications, e.g. tag 'a' implies 'b'. New 'imply' subcommand for managing these.
• Added --force option to 'repair' subcommand to remove missing files (and associated taggings) from the database.
• Added --from option to 'tag' subcommand to allow tags to copied from one file to another. e.g. 'tmsu tag -f a b' will apply file b's tags to file a. ('tag -r -f a a' will recursively retag a directory's contents.)
• Added --directory option to 'status' subcommand to stop it recursively processing directory contents.
• Added --print0 option to 'files' subcommand to allow use with xargs.
• Added --count option to 'tags' and 'files' subcommand to list tag/file count rather than names.
• Bug fixes and unit-test improvements.