Accept 0 as a "valid" value for the constructor and operator=()
(constructing a Direction with 0 value was possible any way, using the
default constructor).
This fixes the reception of requests on UDP.
For object types that we needed to store into an unordered_set, we used
string-based hashes, defined into stock.cc. We now define new hash
functions as friend of target classes, based on boost::hash_combine.
The following classes now have a hash_value() function:
- Request
- CalibrationRequest
- Direction
- Timestamp
- Point3D
- ReferencePoint
- Where possible, use initialisation lists in class definition instead
of explicit variable initialisations in source file.
- Rename some variables (use of "source" in copy constructors and
operators…).
- Suppress useless Doxygen comments, allow non-documented members in
Doxyfile.