t = re.sub(r'\n((//!)?\n)?//! @ingroup .+?_internal\n', '\n', t)

* refactor IDetector to have built-in, n-dim ROI support
* add methods for implicit ROI handling (no distinction to be made on caller's side)
* add docu for ROI
* refactor CoordSystem classes to not use detector and its ROI related things internally,
  but at caller's side. This eases transition handled in issue #71 ("Further consolidate ICoordSystem")

add unit tests as well

was not in use at all, only in tests. Only roiIndex and detectorIndex shall be used

* remove indirection class SimulationArea
* docu
* adapt tests

the call is contained in the following call to isMasked()