[Telepathy] ANNOUNCE: telepathy-mission-control 5.1.0

[Simon McVittie]

I'm proud to announce Mission Control 5.1.0, the "beta 75 would have been
silly" release.

Note that this is not compatible with Mission Control 4 as used by Empathy -
stable distributions should stick to MC 4, and development distributions (e.g.
Debian sid, Fedora rawhide) should either package MC 5 independently, or not
package it at all yet.

Tarball:
http://telepathy.freedesktop.org/releases/telepathy-mission-control/telepathy-mission-control-5.1.0.tar.gz
Signature:
http://telepathy.freedesktop.org/releases/telepathy-mission-control/telepathy-mission-control-5.1.0.tar.gz.asc
The latest reviewed code is always available from:
git://git.collabora.co.uk/git/telepathy-mission-control.git
http://git.collabora.co.uk/?p=telepathy-mission-control.git (gitweb)

After months of development, this is the first numbered release of Mission
Control 5. We jumped straight to 5.1 in order to use the Linux-style odd/even
versioning seen in the other Telepathy components, so the 5.1.x development
branch will lead to the 5.2.x stable branch.

Changes since Mission Control 4 are too numerous to list here, but here are
the major architectural changes.

The proprietary MissionControl API no longer exists; the daemon is a
telepathy-spec-compliant AccountManager, and also a telepathy-spec-compliant
ChannelDispatcher. Consequences of this include:

* Clients are no longer expected to implement the ChannelHandler interface.
  Instead, they may implement the Observer, Approver and/or Handler interfaces
  specified in telepathy-spec.

* The design of channel dispatching copes better with having multiple user
  interface components installed.

* Accounts' presence, avatar and nickname are now independent (stored
  per-account), allowing for more precise control by UIs.

* Accounts no longer have to belong to a "profile", although they still can
  (albeit only by using a non-standard extension).

Accounts are now stored in a flat file, rather than by abusing GConf. The
included mc-account-convert tool might be able to convert MC 4 accounts to
the MC 5 format, if you're lucky.

libmissioncontrol-server has changed its API and ABI considerably, and is not
yet considered stable in its new form either. It is no longer installed by
default (in a normal configuration it'll just be compiled into the daemon).

libmissioncontrol (based on libtelepathy and also known as
libmissioncontrol-client) no longer exists, and has been replaced by
libmcclient (based on telepathy-glib).

Mission Control 5 is not a drop-in replacement for Mission Control 4, and
cannot be used by Mission-Control-4-based applications like Empathy 2.26
and the Maemo 4 platform. However, both versions can be installed
independently in the same directory prefix, to facilitate porting from one to
the other.

Known regressions since Mission Control 4:

* There is no gnome-keyring integration yet.
* The client and server library APIs are not considered to be stable yet.

Regards,
    Simon
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