Backport of ClassInformer for IDA 7.1

Thanks Sirmabus and @Karaulov!

Fix hang on bad names

0.0.2

Merge branch 'master' of github.com:ecx86/classinformer-ida7

Beta release

"It doesn't crash so it's probably fine."

Report issues to the tracker; I will try to get around to them as soon as possible. If you experience crashes, reproduce it with the debug build, and attach a crash log and dump. Otherwise I can't fix the issue.