Version 1.2.0 Release

 * add a scheduler that accounts for memory and CPU utilization, which will
   require:
   . a standard python means for services to get system memory and other
     resource utilization stats
   . a means for services to report this to the ProxyManager
   . an algorigthm (or series of them) for determining the suitablity of a
     service to receive the next request based on a total evalution of current
     reported resource utilization
 * I don't like the default behaviour of adding bad hosts back into circulation
   without any checks; I want to add something there...
   . store away more info about the down hosts
   . when, how long til next test, etc.
   . track the count of faults.
 * sort service groups in admin UI by name
 * cache DNS lookups
 * start adding unit tests
 * support a configurable option to log connections to balanced servers