Fully committed to new Text class.

- moved impl into .hpp
- replaced last few uses of LineWrapper with Text
- removed LineWrapper

include/internal/catch_impl.hpp

@@ -27,7 +27,7 @@
 #include "catch_test_case_info.hpp"
 #include "catch_tags.hpp"
 #include "catch_version.hpp"
-#include "catch_line_wrap.hpp"
+#include "catch_text.hpp"
 #include "catch_message.hpp"
 #include "catch_legacy_reporter_adapter.hpp"