Make Indy::TContext live only for a series of Get requests.

All other requests reset the context (for the time being). More precise semantics will be implemented at a later date. This makes it so the hello world example passes fully (Along with anything else doing get/set in a single connection. Note that Noop change the consistency, so any time you want to force Mynde to start working in a new timeframe, just send a Noop.