Article [code]: In Memory Data Compression

This one seems like it could work as a sweet snippet. There's a reference to some stream stuff that looks like it should be removed, but otherwise it doesn't seem to need much modification. I'll double check the spelling and grammar later, but it seems for the most part fine.

I fixed a couple of errors in the code, and made a few spelling and grammar changes. The revised article is here. Should be more or less publishable as a sweet snippet.

Pushed to the ready-to-publish queue. For the record, I'm making a concerted effort to clear the ERB backlog and close every single open thread as either deemed publication-worthy or rejected.