v0.8.0

• Changed callable parameters from const& to &&
  • Callables are now forwarded to the operators using std::forward
  • Operators now store the callables by value
• Optimized container access in the distinct operator
• Changed the linq CMake target to require at least C++ 17
• Fixed multiple compiler warnings
• Enabled compatibility with:
  • GCC 10
  • Clang 16
  • AppleClang 13
  • MSVC 2019
• Enabled Cppcheck and strict compiler options in builds

Full Changelog: v0.7.0...v0.8.0