Do not print updates to the public variables. Fixes #88

[xmacex]

A change so simple I must be misunderstanding something, and/or placing this in the wrong place. As I understand, the updates are still coming through and doing their thing, just that they aren't printed (DruidRepl.output) into druid for the user to see.

[tehn]

i believe this is correct--- i admit to never using public vars myself--- pinging @trentgill for confirmation.

happy to release a new version upon fix

[tehn]

aha, any chance you saw the only other open PR?

#69

[xmacex]

I did saw it exists, but didn't look closer at it. You are corrent, I see now that it addresses this same thing, and more. Thanks for pointing that out. Would merging PR, or cherrypicking the bits which filter events in crow_event in repl.py and close #88 be possible?