Changed: got rid of using 'self' during initialization
Fixed: drawing bug if 'showsShadows == NO' (missing layer property init. for shadowRadius and shadowOpacity)
Added: property 'shadowRadius'
Added: property shadowOpacity
Changed: added missing use of the new property shadowOpacity
Merge commit '6dfc3280dcbbfa76804daeef15b5a0a450dd5091' into barz-master