Idea from stream: Pre-generate dynamic stuff

[ghost]

One of our stream viewers (bigfatspiderman) was talking through possible optimisations we could perform. During the discussion we came up with the idea that the dynamic emissions could probably be switched out (replace the binding for the DynamicEmitter) with one that has a precompiled assembly.

This would potentially produce a significant performance improvement to the composition stage of larger applications, and would be akin precompiling web forms applications before publishing to IIS.

It may be worthwhile doing this as an extensibility package to reduce bloat on the core library and also show off extensibility.