- Update to 0.6.3:
* This release fixes builds with libc++ < 11 (#187)

- Update to 0.6.2:
* nwgbar contents can be scrolled (#182);
* max icon size is increased up to 2048 (#180);
* fixed broken pins ordering (#176);
* fixed nwggrid spawning server with messed up arguments;
* launchers will no longer fail to start after being improperly closed
(e.g. SIGKILL) (#178);
* nwggrid prints an error if started with -p or -f and -d at the same
time;
* fixed potential data race when accessing pid file.