use appropriate IP for my laptop 134.89.13.60  (not simply localhost),
and also use a socket for sending and a (bound) socket for receiving the
response.  Tested OK with the CG services endpoint at WHOI.
Merge branch 'master' into platform_agent_R2C4
Merge remote-tracking branch 'upstream/master' into platform_agent_R2C4
platform_agent_R2C4 branch finally merged
basic messaging with WHOI from MBARI now ok.  Very preliminary local tests
with simple simulator and only for reception of ACK messages also ok.
more basic preparations for handling interaction with CG services endpoint;
basic tests with acks and nacks.
Merge remote-tracking branch 'upstream/master' into platform_agent_R2C4
dev notes moved to https://confluence.oceanobservatories.org/display/CIDev/Platform+agent-driver+dev+notes
"external event dispatch" no longer exposed as an separate operation
rename validate_driver_configuration to _validate_driver_configuration
made type quantity only to fix gui
Merge branch 'master' of https://github.com/ooici/coi-services
Merge branch 'master' of https://github.com/ooici/coi-services
PlatformAgent._reset: disconnect driver if connected
added back other types
optimized record and range types

optimized record and range types
Merge branch 'master' of https://github.com/ooici/coi-services
Merge branch 'master' of https://github.com/ooici/coi-services
Merge branch 'erddap_meta_fix' of https://github.com/mbarry02/coi-services
Patches bug in RDT