The version information is now stored only in the tags.
By this we are able to release commits in the past, which
have already been tested, so we don't need a code freeze
or run tests any more. This is also the first step for
letting Travis do the releases in the future.
The package.json now contains the new
property 'branchVersion' that defines which tags are
valid on this branch.
Closes#6116
Refactored all scripts so that they are divided into a `prepare`
and a `publish` phase. By this we can build, test, tag, commit
everything first. Only if all of this is ok we start pushing
to Github. By this we keep Github consistent even in error cases.
Extracted include script `/scripts/utils.inc`:
- parse and validate named arguments in the style
`--name=value`
- proxy git command and deactivate `git push` based on
command option `--git_push_dry_run=true`
(will be inherited to child scripts)
- enable/disable bash debug mode by command option
`--verbose=true`
- dispatch to functions based on command option
`--action=...`
- helper functions for dealing with json files
