フィールドと更新処理の実装途中。
Merge commit '2059573b38e0bc9fb659018ed9d74b19fcc2ea7a' into develop

Conflicts:
	proj.ios_mac/BarrelCannon.xcodeproj/project.pbxproj
Merge branch 'develop' of https://github.com/fluncle/BarrelCannon into develop

Conflicts:
	Classes/BaseBarrel.h
	proj.ios_mac/BarrelCannon.xcodeproj/project.pbxproj
test