This commit extends the Matchers feature with the ability to have type-independent (e.g. templated) matchers. This is done by adding a new base type that Matchers can extend, `MatcherGenericBase`, and overloads of operators `!`, `&&` and `||` that handle matchers extending `MatcherGenericBase` in a special manner.
These new matchers can also take their arguments as values and non-const references.
Closes#1307Closes#1553Closes#1554
Co-authored-by: Martin Hořeňovský <martin.horenovsky@gmail.com>
Now that the recommended distribution and usage method is proper
library, users can just avoid including the matcher headers to get
basically the same effect.