Changes in version 2.0
- Incompatible changes (requires update of your Parameters-def.h file)
	- Move the code to gitlab.inria.fr/lasgoutt/parameters/.
	- API CHANGE: rename PARAM_ENUM to VALUE_ENUM and VAR to PARAM_ENUM.
	  Add a DESC argument to PARAM_ENUM.
	- API CHANGE: add setters/getters allowUnknown() and paramEqValue();
	  remove corresponding boolean parameters of parse().
- add HELP() macro for giving structure to long list of parameters.
- help messages and lists are now correctly aligned.
- read() returns false when the configuration file is not found.
- fix bug where the same switch value cannot be used twice on command line.
- update the demonstrations and move them to their own directory

Changes in version 1.4a
- fix warnings

Changes in version 1.4
- check for errors in parameters values
- do not remove parameters from argv when allow_unknown is false
- allow to change the comment prefix
- add PDF version of the documentation
- add `-help' as a synonym of -h

Changes in version 1.3
- add support for reading configuration file
- parameters names are now case insensitive

Changes in version 1.2
- add support for enums variables (macro PARAM_ENUM)

Changes in version 1.1
- add support for multiple parameters sets
- add support for extra variables (macro VAR)
- add support for preamble definitions (macro IN_PREAMBLE)
- make all arguments of Parameters::parse mandatory
- the macro to define the parameters definition files is now
  PARAMETERS_DEF (note the trailing `S')