Updated deprecated ThreadSafeConnectionManager to PoolingClientConnectionManager
and added the conn-mgr/make-manager function as well as the client/with-named-connection-pool macro to allow pooled connections.  DJJ
Just cleaning up some stuff I had forgoetten in the previous commit
stray & infront of args to conn/make-manager.   Caused class cast exception in non-default case
Merge remote-tracking branch 'djjolicoeur/master'
Big refactor of connection pooling stuff
drop test support for 1.2.1 (it's still supported, just not tested by default)