evolve: use 3.2+ fullreposet to evaluate argument set (issue4515) getset() has no compatibility wrapper for old-style argument and we don't want to add more hacks in Mercurial core.

evolve: cache marker encoding to avoid performance degradation The main overhead in bug 4518 is caused by calculating relevant markers and encoding markers into the correct format. Calculating relevant markers takes (worst case) ~ 0.12 seconds. Encoding markers takes (worst case) ~ 0.06 seconds. Caching encoded markers takes care of the second part and speeds up cloning in bug 4518 by about 35%.

evolve: handle invalid obsmarkers in the `debugobsconvert` User can now recover from such situation, The error message is also changed to point the `debugobsconvert` commands.

fix release date in the readme

merge stable in default

Added tag 5.1.0 for changeset bfe9be352453

update readme and bump version to 5.1

merge default into table 3.3 is about to be released.

discovery: filter null from the discovery revset If there is nothing in common, common will be "null" and the revset will now returns "-1" crashing the discovery process. We filter out the null revision to prevent that.

tests: update to new core output Multiple output change need to be applied to the test suite.