Log Message:
Updated py-tortoisehg to 4.0.

TortoiseHg 4.0

TortoiseHg 4.0 is a quarterly feature release

Improvements

    graph: make annotate/history graph work with a shallow (remotefilelog) repo
    repoagent: light-weight suspend of repository monitor while running commands
    repofilter: adjust branch combo to content every time model changed
    repofilter: do not calculate width of revset combo from contents (fixes #4035)

hgext:

    extension: rename the extension from 'lighthg' to 'thg'
    extension: restrict to only 'view' as a command name
    light-ui: update the windows name to mention TortoiseHg and reponame