doc: Added coverity scan badge
devel: Added informations on already implemented and planned features
doc: Added backlog section
doc: Added description

Fixed also some minor spelling errors
devel: Removed obsolete files
feat: Added circle-sphere intersection support

This is needed by 3-dimensional robot models with rotational joints
fix: Added virtual deconstructor
devel: Removed experiemental robotic support

It is now integrated into the framework
devel: Added intallation routine form cereal and catch
devel: removed cereal includes

Must be preinstalled by now
devel: removed catch includes

must be preinstalled by now
devel: cleanup temp files
devel: removed never used evaluation helpers
devel: Added comments to organise includes
feat: Added support for the 6PUPS
feat: Added support for the 3PRRR
feat: Added support of the 3PRPR robotic model
feat: Added support of the 6PRUS robotic model
devel: removed yet unused robotic optimisation problem wrapper

May actually be reintroduced later on
feat: Added calculation of circle sphere intersections