[JSON] since we no longer use a netbeans project for the (de)serialisation macro building code, can revert the changes made to the .gitignore file

[JSON] rough and ready code for generating (de)serialisation macros. Current upper bound on number of member variables is set to 64

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- updated .gitignore file to ignore private netbeans project configurations

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- used code to increase the upper bound on number of member variables to 64

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- used code to increase the upper bound on number of member variables to 64

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- updated .gitignore file to ignore "dist" and "build" directories in netbeans project 

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- netbeans project configurations

[JSON] dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types

Add static assertion for missing binary function in SAX interface

add inline specifier for detail::combine

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- updated .gitignore file to ignore private netbeans project configurations

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- used code to increase the upper bound on number of member variables to 64

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- used code to increase the upper bound on number of member variables to 64

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- updated .gitignore file to ignore "dist" and "build" directories in netbeans project 

[JSON] 	- dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types
		- netbeans project configurations

[JSON] dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types

Add test for target_include_directories

Tag binary values in cbor if set

Clean up maintainer Makefiles and fix some linter warnings

Add option to ignore CBOR tags

Hash function without allocation

Add ClangCL for MSVC

MS Visual Studio 2019 has builtin support for other compiler toolsets [1].

This commit adds support for compiling using LLVM/Clang 10 using Visual
Studio.

ClangCL pretends to be MSVC so the usual MSVC flags apply, see also [2].
For detecting if ClangCL is used, newer cmake verisons (>= 3.15) have
builtin support using CMAKE_CXX_COMPILER_FRONTEND_VARIANT [3], for older
ones a workaround is available using CMAKE_CXX_SIMULATE_ID [4].

[1]: https://devblogs.microsoft.com/cppblog/clang-llvm-support-in-visual-studio/
[2]: https://clang.llvm.org/docs/UsersManual.html#clang-cl
[3]: https://stackoverflow.com/a/10055571
[4]: https://github.com/microsoft/CMake/commit/4fe34b2d29ca67ea91b2545b223dad8abbcad282