Yibo He

fix: add KeyGet for built_in_functions

10

part of: #209 add KeyGet(), KeyGet2() and KeyGet3() for built_in_functions

set_target_properties called with incorrect number of arguments

3

### Description This error occurred when I tried to run a CMake project including casbin-cpp on Visual Studio2019. It seems that set_target_properties didn't recognize it after PREFIX was set to...

fix: register keyGet function for evaluator

2

fix: #215

Register keyGet function for evaluator

2

Part of: #209 The updated `KeyGet*` functions have not been registered in the `evaluator` yet, so they cannot be called internally in the `enforcer.` To solve this problem, I modified...