- Make data decimation configurable
- Addded some documentation
- Some code cleaning (eliminate warnings, move internal classes into detail namespace)

If sendMessage is used before chimeraTK process variables are initialized an internal buffer is used to store those
messages. Once the process variables are initialized the messages from the buffer are send.

Include descriptions of the owning Module in the descriptions of each process variable to make them more complete.

- update dependency versions

fixed not creating some of the application varibales with wait_for_new_data despite they were specified as push inputs

Updated to use the new ReadAnyGroup instead of the old readAny function. Some tests are still hanging or failing (mostly due to shutdown issues)

Use one file per class. Also, use boost::core::demangle instead of
checking for abi::__cxa_demangle by ourselves.

We have a visitor now for generating
 - the XML
 - the Module's dot graph
 - the textual dump of the VariableNetwork
 - the dot graph of the VariableNetwork

It inherits two functions from its two base classes. Explicitly use the
one from ApplicationBase.

add enable_latest_cxx_support.cmake and added a comment to enable_cxx11_support.cmake to no longer use is.