This is a relatively easy error to fix locally. Open the TwitterKit.framework, go to TwitterKit.h under the Headers folder and import the header files that are missing and throwing a warning/error in your project. Granted I am not a big fan of editing frameworks locally, especially such high profile ones as Twitter. Hopefully they can just fix this soon by doing the same or deleting the classes if they are no longer needed. These are the files I had to add to fix my configuration.
import TwitterKit/TWTRMediaEntitySize.h
import TwitterKit/TWTRTweetCashtagEntity.h
import TwitterKit/TWTRTweetHashtagEntity.h
import TwitterKit/TWTRTweetURLEntity.h
import TwitterKit/TWTRTweetUserMentionEntity.h
import TwitterKit/TWTRVideoMetaData.h
Probably still going to revert to 2.0.2 until this is fixed in an official release.