Fix warnings

Signed-off-by: Rafał Malinowski <rafal.malinowski@corp.bluecherry.net>
Support versions with 3 items

Signed-off-by: Rafał Malinowski <rafal.malinowski@corp.bluecherry.net>
Version updated to 2.1.2

Signed-off-by: Rafał Malinowski <rafal.malinowski@corp.bluecherry.net>
Changelog updated

Signed-off-by: Rafał Malinowski <rafal.malinowski@corp.bluecherry.net>
Ensure to not disconnect from objects that do not exists anymore

Signed-off-by: Rafał Malinowski <rafal.malinowski@corp.bluecherry.net>
Fix loading gstreamer plugins on MacOSX
Merge pull request #136 from vogel/release-2.1.2

Release 2.1.2