The Idris Errors panel should tell me if typechecking went successfully

[NightRa]

If I do typecheck and it fails, it raises the Idris Errors panel.
If I fix everything, typecheck again and it succeeds, currently there is no response what-so-ever and the old type error is still present.
I think there should be some indication that typechecking succeeded, and the old type error should not be displayed anymore.

[archaeron]

hello
there is a PR for this. :)
#40

need to check something and then I can merge it

expect this in the next version

[archaeron]

this is now in master and is ready for the next version
d2b6a86

thanks to @edwinb for this