Log Message:
Update to 3.1:

TortoiseHg 3.1 is a major feature release.

Since 3.1, Mercurial commands are run in separate command server
process. It generally contributes to reliability, but if you have
a faulty extension or an in-process Python hook, it can corrupt
the communication channel between TortoiseHg and the command server.

If you see an error message like "cmdserver: timeout while reading...",
please report it with the list of enabled third-party extensions
and their versions. Currently, reviewboard extension is known to
have this issue. #3841

Note the Windows installers include Mercurial version 3.1 plus two
stable commits which addressed Windows platform-specific bugs.
Bug Fixes

    cmdui: add hidden button to close prompt dialog with no response
    (fixes #1317 - merge has no cancel option)
    filectxactions: redesign to show diff between baseRev and rev
    (fixes #2313 - diff selected file revisions not working after
    move/rename)
    grep, status: use built-in drag-and-drop infrastructure
    patchctx: use patch name give by repo if it is an MQ patch
    (fixes #3831 - patch name is ambiguous when using directories)
    postreview: correctly set parent of first selected revision
    (fixes #3538)
    repofilter: do no run revset query by focus out during history
    completion
    repofilter: do not steal focus when window is restored from
    minimized state
    repomodel: render description column without using HTMLDelegate
    (fixes #1590 - description column contents aligned 1px upper)
    repotreemodel: work around unicode error on XML parse failure
    (fixes #3820)
    run: continue without fork if new process can't be spawned
    (fixes #1949, #3800)
    run: promote rev to common annotate/log option (fixes #3799)
    workbench: do not change window icon (closes #3737)

command runner:

    cmdcore: enable command-server client by default in 3.1, fixes:
	#3343 - blackbox extension not working
	#1661 - "abort: Interrupted system" call during push with
	subrepos
	#2071 - crash when pushing with mercurial_keyring
	#2614 - util.hgexecutable() returns wrong path
	074fd0fde0b6 - worker.py of Mercurial 2.6 only works in
	main thread
	#3370 - Workbench UI getting dispresponsive on certain
	operations
	#484, #788 - can't use git/subversion subrepo
	#3637 - redirect hook stdout, stderr to Output log
	#3670 - WindowsError 6 in pipe decode/encode filter
    repowidget: run "Export Diff" and "Copy Patch" in command
    process for stability
    revset: run query in command process for stability

commit/status widget:

    commit: do not bulk-add unknown files when all selected files
    are largefiles
    commit, filectxactions: escape paths prior to command execution
    (fixes #2108 - files with some special names can't be added or
    commited)
    commit: take "autoinc" list as glob pattern again
    filectxactions: make "copy patch" generate diff between base
    and target revs
    repowatcher: invalidate cache if dirstate file is modified
    (fixes #3647 - file renaming inconsistencies)
    wctxactions: delegate "file history" action to filectxactions
    (fixes #2591 - No shortcut for "File history" command on files
    in Working Directory)
    wctxcleaner: invalidate changelog on each check of dirstate
    (fixes #3826 - commit do not work properly in the merge dialog)
    wctxactions: make visual diff compare to base revision, add
    "diff local" in place
    (fixes #2001 - diff does not work on MQ patches)
    wctxactions: reimplement by using command APIs, fixes:
	#1347 - add support for pre-<command> and post-<command>
	hooks
	#2217 - adding files to source control in the separate
	thread
	#1953 - largefiles treated wrong when added by "add large..."
	menu

high dpi issues:

    graphdelegate: update row height to actual value prior to
    painting
    (refs #3690)
    widgets: use small icon size defined by platform style (fixes
    #3690)

obsolete changeset:

    repoagent: append --hidden option while hidden changesets are
    visible
    repowidget: replace pseudo "incoming()" filter by "bundle()"
    (refs #3535)
    repowidget: switch visibility of hidden changesets globally
    (fixes #3735 - obosoleted changeset appears as "Child:" field
    unexpectedly)
    thgrepo: start with filtered repo because it is the default of
    Mercurial

Improvements

    blockmatcher: improve visibility of narrow markers
    filelog: export thg filelog [-r REV] [--compare] FILE command
    fileview: remember chunk selection on view mode switch
    mergetools: port gvimdiff from Mercurial's mergetools.hgrc
    searchtoolbar: make next/prev shortcuts available in owner
    widget (fixes #3819)
    status: open merge tool on double-click for unresolved file
    (closes #1230)
    toolbars: use toolbar icon size defined by QApplication.style()
    except on Mac (see 8d6212194e21 for details)

graph:

    graph: draw ancestor-descendant relations in filtered graph
    (see 891146f5a9bb for details)

Installer

    wix: remove i18n source files (.po) from installer package
    (closes #2566)
    keyring 4.0
    hgsubversion 1.6.2