When we update the mFi server for the state of a switch, the new
state is not always reported immediately if we update right after
the action (the server is not RESTful).
This patch adds some internal target-state handling to report the
desired state on the next poll, allowing any subsequent polls to
override that state.
Also, bump the version requirement for mficlient to 0.2.2 to absorb
a bug fix.
