* first draft of fixing the free function available within the class
* removed class member function freeSharedmemory for both Detector and Module; made the free function freeSharedmemory accessible to python interface; setHostname if there is already a module in shm will recreate the Detector object while freeing shm completely and keeping detsize and intitialchecks (previous commit), sethostname called from DetectorClass in virtual command to have one point of entry (previous commit), testing Module class frees shared memory using free function
* Detector class: added copy and move constructor and assignmentoperators due to explicit destructor (DetectorImpl fwd declared), DetectorImpl class: included ZmqSocket to remove destructor (should not be virtual in any case), Module class: removed explciit destructor to allow compiler generated constructor and operators
* formatting
* minor fix for readme autocomplete
* updated client version date
* initital implementation
* datetime replaces with sls::Duration in Python C bindings
* using custom type caster
* fix for conversion to seconds
* added set_count in python
* common header for pybind11 includes
authored-by: Erik Frojdh <erik.frojdh@psi.ch>
