Potential Improper Lock

[Noggog]

Probably not a large issue since it's an internal class, but I thought I'd bring up
/~https://github.com/RolandPheasant/DynamicData/blob/master/DynamicData/Cache/Internal/ReaderWriter.cs#L86

Looks improper at a glance to be locking this, and doesn't line up with the rest of the class' locking system. If it's on purpose, sorry about the bother. 8)

[RolandPheasant]

You're right. That's a dumb error that needs fixing.

[RolandPheasant]

I have fixed the locking and deployed a patch to Nuget.

Thanks for point the error out.