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Make all types have ValueLike traits by default. This allows new types to be added without any fuzz (no need to specify the traits) if it has operator>>. It also removes the need to manually specify the ArgTrait for all built in types (such as long, bool, char, float etc). ArgTraits now works in the following way: 1) If there exists a specialization of ArgTraits for type X, use it. 2) If no specialization exists but X has the typename X::ValueCategory, use the specialization for X::ValueCategory. 3) If neither (1) nor (2) defines the trait, use the default which is ValueLike. Conflicts: examples/Makefile.am examples/test24.cpp tests/Makefile.am tests/runtests.sh tests/test83.out tests/test83.sh