Change modules to crunch strings that app passes to them.
Top-level POM: set versions in prep for release.
Checkout latest releases of all modules.

Done with
  git co rel-app-1.0 app/
  git co rel-module1-1.0 module1/
  git co rel-module2-1.1 module2/
Add a README -- vital for release!

This README must be brought back into the trunk...
Merge tag 'rel-1.0'

Done with
  git merge -X theirs rel-1.0