Added 'basic listener' parameter as 'parent' to loopable
Merge branch 'master' of https://github.com/ecumene-software/LibEcu.git
Removed 'basic listener' and 'loopable' pair
Added a 'Window' and 'Window Attributes' pair
Merge branch 'master' of https://github.com/ecumene-software/LibEcu.git