New Matchers implementation

- simpler
- less templates and machinery
- no cloning, copying or unnecessary heap allocations
- better factored

include/internal/catch_common.h

@@ -24,8 +24,6 @@
 #include <sstream>
 #include <algorithm>
 
-#include "catch_compiler_capabilities.h"
-
 namespace Catch {
 
     struct IConfig;