minor clean up
Make multipart name optional, close #2207
Add mention about checks/redirect
Add examples for request bodies, close #2208
Remove people who didn't contribute significantly or whose code is long gone
Stop defaulting to Gatling/2.0 UserAgent, close #2206
Woups, wrong value
Make sure all AHC exceptions are sent to the Handler, close #2209
Improve exception when people directly hit the proxy, close #2204
Trap empty outgoing proxy ports, close #2203

far from perfect
format
Improve fix #2204
Improve obsolete props logging, close #2202
should' be using stripMargin
format
Recorder: reconnect https client channel, close #2189
Cleanup release settings
Build only master branch on Travis CI, close #2211
fix enforceCompression comment in gatling.conf, close #2210
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