info.xml - Bump to 2.0-beta3
info.xml - Bump to 2.0-beta3

We've published 2.0-beta2, so the version in `2.x` should be bumped to
something higher.

veda-consulting/uk.co.vedaconsulting.mosaico,veda-consulting/uk.co.vedaconsulting.mosaico,veda-consulting/uk.co.vedaconsulting.mosaico,veda-consulting/uk.co.vedaconsulting.mosaico