0.5.0 release

[rubyri...@gmail.com]

Dear reader,

Hereby I announce the 0.5.0 release. A lot of work has gone into this
release. It should fix most bugs, as well as adding plenty of
features. A summary is shown below.

* Make freedb work again (using http instead of socked connection)
* Add basic support for normalize using "mp3gain/wavgain/vorbisgain/
metaflac"
* Add basic support for normalize using "normalize"
* Ability to set multiple processes for encoding tasks (for all those
dualcores)
* Support to load freedb from local $HOME/.cddb folder
* Reload disc metadata from the internet if same disc is still in the
drive
* Some fixes so the gtk2 interface (resizing, grey out buttons)
* Fix for some cases the preferences weren't saved in time
* Cdparanoia installation check on startup, prevents mysterious error
* Option to not keep the logfile if no correction is needed
* When warning that a directory already exists, mention which
directory
* Save various artist correctly on local yaml file
* Get a larger icon for even more beauty, also install it conform
standards
* Use some environment variables
* Add Spanish translation
* Look if an encoding process exited normally and otherwise WARN
* Any other fix I missed

Kind regards,

Bouke Woudstra
Rubyripper developer