Merge branch 'release/0.3.1'
Add validation so that Parcelable with forDb will be error.
Merge pull request #6 from cattaka/feature/do_not_store_parcelable

byte arrays from Parcel#marshall are stored to persistent storage
Revert "byte arrays from Parcel#marshall are stored to persistent storage"
Merge branch 'revert-6-feature/do_not_store_parcelable' into develop