chore: release 0.2

New version and a brand new gnvim is here! Rewritten from the ground up
for gtk4, and now has:

* More complete and correct implementation of the ui api
* Custom rpc client
* Better code structure for easier development
* Updated UI
* Feature wise all the features are here.
* Rendering artefacts are now fixed, and the rendering performance should be
  better or at least on bar compared to the previous version.

Author: vhakulinen

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "gnvim"
-version = "0.1.0"
+version = "0.2.0"
 authors = ["Ville Hakulinen <[email protected]>"]
 edition = "2021"