cc-v1.5.0

Added

• inherit x86 target features from RUSTFLAGS (#1948)

Fixed

• don't report the file name cl.exe echoes as a warning in expand() (#1950)
• ignore MSVC /link flags with a warning (#1949)
• Make windows_sys more private and re-export types needed by cc-rs (#1944)
• pass -Tp on MSVC for .cc so they are not treated as objects (#1930)

Other

• document macOS SDKROOT and Xcode CLT for testing (#1943)
• remove License section from CONTRIBUTING.md (#1942)
• add CONTRIBUTING.md and Conventional Commit PR title check (#1938)

Fixed

• Pass -Tp immediately before .cc sources on MSVC (not clang-cl) when compiling C++ so they are not treated as object files (#1877)