License issues

[JHSawatzki]

All the new files are MPL and the ones taken from the deprecated lib are LGPL. Would be nice to stick to one license used in the whole library.

[leonardocavagnis]

Hi @JHSawatzki,
Thanks! I submitted the PR, take a look if sounds good for you!

[JHSawatzki]

Looks good! Thanks for the quick response.