Made read-only properties serializable.
Made read-only properties serializable.

 This allows using anonymous classes for querying collections.

prepare/LiteDB,masterdidoo/LiteDB,prepare/LiteDB,Skysper/LiteDB,falahati/LiteDB,icelty/LiteDB,RytisLT/LiteDB,masterdidoo/LiteDB,RytisLT/LiteDB,prepare/LiteDB,prepare/LiteDB,falahati/LiteDB,89sos98/LiteDB,Xicy/LiteDB,mbdavid/LiteDB,89sos98/LiteDB