Revert "Visual Studio 2012 に移行 (#404)"

This reverts commit d1ce9683b60965ff71c57639ac56721760dcfb1d.
Bumped version number to 0.2.2.252 (#407)
リリースノート更新 (#407)
Merge branch 'release/v0.2.2.252'
Merge branch 'master' into develop