Which license?

[Dan Howard]

Hi everyone.

I'm building an open source alternative view layer library - to be used instead of Velocity or JSP and I'm not sure which license would be best to distribute it under.

Basically I'd like a license that says "You can use this in commercial or non-commercial applications but if you modify the sources to the library itself, I'd like to have those changes sent to me so I could possibly integrate those changes in to future versions."

I think the LGPL is closest to this? Any thoughts?