Updated the ROADMAP
convenience: allow passing args to throttle

As a bonus point we also relies on func.apply instead of Lang.bind,
which is simpler
Fixed #38: Switch focus faster

We do not need to wait for the animation completion to request focus
asynchronously. I remember it was blocking a lot before. Now the
animation is just a bit less swift the first time, but we can type as
soon as the animation starts which feels way better.
Fixed #36: Allow a block cursor in the terminal

It was mostly working nicely with focus improvements of v2 and it seems
this is completely fixed with newer vte versions. Well, I did not
reproduce after using the terminal for quite some time.