cmake deprecation warning

[willie]

I've just started using your library (thank you for it), but I thought I would pass along a warning that cmake is giving me now. I think its weird on the part of cmake, but, nevertheless.

CMake Deprecation Warning at build/_deps/cappuccino-src/CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 2.8.12 will be removed from a future version of CMake.
Update the VERSION argument <min> value or use a ...<max> suffix to tell
CMake that the project does not need compatibility with older versions.

[willie]

I should note that if someone else comes along and this project hasn't been updated (I'd file a PR, but I don't know the author's wishes) and they want the warning gone, you can put this line (as a workaround) in front of your FetchContent_Declare:

SET(CMAKE_WARN_DEPRECATED OFF CACHE BOOL "CAPPUCCINO_BUILD_TESTS" FORCE)

[jbaldwin]

Hey, thanks for opening an issue and glad you're liking the library. Would you be willing to open a PR to fix the warning?

[willie]

Sure, I'll do that.

[willie]

Pull request filed #26