Lili Yang / ctools

Since the new GApplication logger methods are more compact than the old format the "logTerse()" etc. constructs have been replaced by the new logger methods. At the same time, the chattiness levels have been reviewed with the following behaviour:
- TERSE: only headers
- NORMAL: standard output, only main results or computations
- EXPLICIT: detailed output
- VERBOSE: verbose output, mainly for diagnostics

The building of a cuve on the fly raised issue with memory going out of scope. This is fixed by making the CTA event cube a member of ctbin, and having the cube() method returning a reference to that member

It turned out that the partial coverage of counts cube bins using the weighting array does not work. The problem is spill over of events from one RoI to another than can not be dealt with at the level of a stacked analysis. The old logic of using only fully contained pixel is put back into place. The weighting array is (for the moment) conserved as it could serve other purposes. However, excluding of pixels is already accomplished by setting a pixel value to -1, so it remains to be seen whether we would like to keep that logic or if we would like to use the weighting array (which is more universal).

The GCTAEventCube::map() method has been renamed to GCTAEventCube::counts() (#1789)

The publish parameter has been added to the following tools:
- ctbin
- ctbkgcube
- ctcubemask
- ctexpcube
- ctmodel
- ctskymap
- cttsmap

Added ctool::require_inobs_nocube() method that throws an exception if a counts cube has been specified as inobs parameter. This method is then used by ctbin, ctexpcube, ctpsfcube and ctbkgcube.

Without the energy margin, roundoff errors may lead to the exclusion of the energy bin in case that a single energy bin is used.

…d in observation ebounds. Also added some improvements to csspec.

…(see #1360 for details).

…)-function of individual ctools

…d scave() methods to ctool interface. Add read_ahead() method to handle reading of task parameters at the beginning of the task execution. Remove all m_read_ahead members from the derived classes.

…ovided by the base class

The ctool base class is now used in the ctbin tool. The get_ebounds() method has been moved to the ctool base class so that it can be used also in other tools. This reduces code duplication.

We do not want to fill cube bins outside the RoI to be consistent with the response and modelling part.

In the adaption to cube-style analysis, response and model information was lost in the observation container. Now, model information is conserved, and in case of a single CTA observation, response information is carried over. This provides support for the original binned analysis.