Num pad numbers do not trigger PUGL_TEXT events

[falkTX]

It is nice to have access to num pad key events, but their use right now is very limited as they do not generate character/text events which are handy for text input.
On pugl they are treated as "special" characters, but I think some of these should still to be used for text events, particularly 0-9, /, *, - and .