evolve: allow updating to the successor if the parent is obsolete
Although 'hg update' handles this as well, it will also update to
tipmost descendent of the successor, if any.
'''enable experimental obsolescence feature of Mercurial
OBSOLESCENCE IS AN EXPERIMENTAL FEATURE MAKE SURE YOU UNDERSTOOD THE INVOLVED
CONCEPT BEFORE USING IT.
/!\ THIS EXTENSION IS INTENDED FOR SERVER SIDE ONLY USAGE /!\
For client side usages it is recommended to use the evolve extension for
improved user interface.'''
import mercurial.obsolete
mercurial.obsolete._enabled = True