support once, transform identity constraints separately. The ordering
that ensures that identity constraints are solved first is ensured by
making the identity solvers be the most important ones
transform once: also in SCB, fix off-by-one when transforming multiple fragments
fix transform for long files (off-by-one)
linting

Conflicts:
	babelsberg/constraintinterpreter.js
strip identity constraint support
add test for transform of multiple fragments
move CodeEditor into test harness
Merge remote-tracking branch 'origin/master' into src-transform-fixes

Conflicts:
	babelsberg/src_transform.js
Merge pull request #14 from babelsberg/src-transform-fixes

Src transform fixes