replaced confess with throw_exception
Wrote tests for NoImmutableTraitSpecifiedForClass & IncompatibleMetaclassOfSuperclass
Wrote NoImmutableTraitSpecifiedForClass & IncompatibleMetaclassOfSuperclass
replaced (die|throw_error|confess) with throw_exception
Wrote tests for exceptions in Moose::Meta::Attribute::Native::Trait
Wrote exceptions for Moose::Meta::Attribute::Native::Trait
Removed redundant use Carp 'confess'
Removed whitespace