Added some documentation to the RateAverager. Fixed implementation of getCurrentRate() so that the current window is moved if necessary before returning the rate.
Added some documentation to the RateAverager.
Fixed implementation of getCurrentRate() so that
the current window is moved if necessary before
returning the rate.

digitalbazaar/monarch,digitalbazaar/monarch,digitalbazaar/monarch,digitalbazaar/monarch,digitalbazaar/monarch