Log message:
Update to 0.42:

This version is in sync with MAME/MESS 0.152 (released earlier
today) and contains a number of major performance improvements,
especially for the loading of cached data. Despite the performance
improvements, we also have a few important stability fixes this
time, and Qt 5 support has been greatly improved as well (we still
recommend Qt 4.8, though). Please see the change-log below for more
details!

Log message:
Update to 0.41.
Improve options: remove unsupported ones, fix build and PLIST for mess
option.

0.41:

The MAME/MESS team decided to change their release model and no
longer produce u-releases, so the intervals between two major
releases are a lot shorter than before. We still want to keep in
sync with them, but this obviously means fewer changes between two
QMC2 releases.

However, we still have some nice additions for you this time :) .
Most importantly, QMC2 Arcade received support for mapping
(theme-specific / native) key-sequences to any other key-sequences
and/or joystick-functions. And Qt CHDMAN GUI is now scriptable â
for more information see our new qchdman-related wiki-page.

This version is in sync with MAME/MESS/UME 0.151.

0.40:
The probably most important feature addition this time is the
support for other common image file formats (apart from just PNG).
There have also been a number of noticeable performance improvements
and (mostly minor) bug-fixes that make it a worthy update.

0.39:
This major update comes with a bunch of nice new features and
improvements, a ridiculous number of fixes and the first official
release of Qt CHDMAN GUI â a stand-alone graphical user interface
/ front-end to chdman. QMC2 0.39 is synced with MAME/MESS/UME 0.149
which were released earlier today.

Special thanks to our new team member Pete Beardmore who made the
great new / alternative darkone theme for QMC2 Arcade.

Log message:
Import qmc2-0.38 as wip/qmc2.

QMC2 - M.A.M.E./M.E.S.S./U.M.E. Catalog / Launcher II is the successor of one of
the first UNIX M.A.M.E. GUI frontends available on this planet called QMamecat
(derived from MAMECAT, which was text-only).