49 

    50 4.0.0 --

    51 

    52 - require Mercurial version 3.0.1 or above

    53 - some compatibility fixes with future 3.1.0

    54 - deprecated `gup` and `gdown` in favor of prev and next

    55 - record parent of pruned parent at prune time

    56 - added a `debugobsstorestat` command to gather data on obsmarker content.

    57 - added a `debugrecordpruneparents` command to upgrade existing prune marker

    58   with parent information. Please run it once per repo after upgrading.

    59 - improvement to obsolescence marker exchange:

    60   - added progress when pushing obsmarkers

    61   - added multiple output during obsolescence markers exchange

    62   - only push markers relevant to pushed subset

    63   - add a new experimental way to exchange marker (when server support):

    64     - added progress when pulling obsmarkers

    65     - only pull markers relevant to pulled subset

    66     - avoid exchanging common markers in some case

    67     - use bundle2 as transport when available.

    68  - add a hook related to the new commands