Methods contained in object type shouldnt be checked for privacy
Fixed index signature validation during assignment compat and subtype check
Assignment Compatibility:
o	M is a string index signature of type U and S’ contains a string index signature of a type that is assignable to U.
Subtype check:
o	M is a string index signature of type U and S’ contains a string index signature of a type that is a subtype of U.
Regression tests for resolved bugs
Update tests
Merge branch 'release-0.9.0' into develop