Support for mentions with spaces

[jaceknijaki]

Hi, it would be nice if you could create mentions that contain spaces like: @FirstName LastName. It seems that updating parser to accept at least non breaking spaces (\u00A0) would be good enough.

[Adimarogonas]

Hello! I wrote a slight change of this current version which supports @firstname lastname.
Simply add mentionsWithSpace: true.
you can install it like this
expandable_text:
git:
url: https://github.com/Adimarogonas/expandable_text