Improve and enforce dependencies license check
We first introduced this in #22 (closed).
Now the Dash license check tool has been improved, based on issues I submitted:
- https://github.com/eclipse/dash-licenses/issues/69 (no more output to stderr)
- https://github.com/eclipse/dash-licenses/issues/72 (generated dependencies file is now already sorted)
We could thus consider the following:
dash.failoption, for release builds only.
- No longer sort the generated dependencies file ourselves.