v0.12.0

• objectbox-generator can be run with a path pattern (glob or recursive path style - see objectbox-generator --help) to support entity removal
• support optional annotation on fields that you want to support NULL value semantics in C and C++; see objectbox-generator --help to specify a type for C++ code (std:: optional/shared_ptr/unique_ptr)
• add id(assignable) annotation you can use on an ID field if you want to manually set object IDs before inserting (instead of the default auto-increment ID assigned by ObjectBox)
• add sync(sharedGlobalIds) annotation to disable ID mapping on synced objects
• C++ generate code - make _OBX_MetaInfo a sub-struct in the generated struct instead of part of the "underscore" class - avoiding potential duplicate symbols