Updated defaults for OSX clang compatibility.
Fixed warning in temp_sensor.
Updated to jive with newer CMock runner generator API.
Updated to latest CMock and Unity.
Updated to work with OSX and bumped version for a branch release if all is well
Merged in 'update_ide_and_pretty_reort_ordering' branch to get report updates and also fixes for toolchain defaults to automate auto-gen of defaults per OSX clang
Bumpbed version to 0.15.6 for new release
Merge branch 'release/0.15.6'