Extension future

[kgshank]

The next gnome release is around the corner and this time, the extension architecture is undergoing lots of changes. As I understand the new architecture makes the extension incompatible with gnome version < 45. Due to lack of time and even after the commitments I gave in the past , I couldn't spend effort in the development. So as of now compatibility for v43 and v44 are doubtful and I might work on them, if feasible in future. I will start the work for v45 soon.