Stubbed out stream parsing entry methods; refactored reader state into an "abstract" class in a separate file.
Converted reader state to a protocol.
Added stream reading support; added NSInputStream and NSData categories to support -EDNObject (both provide full document [EDNRoot] vs. NSString's single object). Added equality members to BMOEDNRoot.
Added category headers to library header. Added test for EDNRoot equality members.