Revert "BaseType 추가."

This reverts commit 9c823e6d8ae57e85a3fc40b52f435f643b847535.
Revert "Revert "BaseType 추가.""

This reverts commit feceaa53582a8ad27eb79a13827b62adc2428ec9.
Merge branch 'master' of https://github.com/NewMusician/ProjectA