Reduce the number of false "merges" by skipping "branch from" entries in the integrated output as well as by ignoring integrations of future (newer) changes.
Added a disk-cache p4 output so debugging imports is faster.
Added --known-branches commandline option for pre-defining branches.
Various other fixes...
Make it possible to specify the p4 changes to import through a text file (for debugging) and made various improvements to the branch/merge heuristic detection.
Create lightweight git tags (using the "reset" trick) for the incremental import instead of full-blown ones. Also fix parsing the output of git name-rev for figuring out the last imported p4 change number.
Make specifying the revision ranges more convenient.
Added support for @all as revision range specifier to import all changes to a given depot path.
Also default to an import of #head if no revrange is specified.