This changes the migration support to:
1. Remove migration from old files from before version 1.0.
If this is still needed by someone, they can use the tool
as it was before this change.
2. Adds migration of maps without submap histograms. These
were so far migrated on-the-fly, but #1710 aims to remove
this.
See also #1709.
This was tested by converting a serialized 3D map and verifying
it can still be used for localization. The file changed a little
bit, but it seems to be good enough.
Signed-off-by: Wolfgang Hess <whess@lyft.com>
Consolidating pbstream tools into a single tool
* adds two subcommands for now (info and migrate)
* removes commandline flags for filenames in favor of commandline args
* updates documentation for migration tool