bump netty 4.0.13.Final -> 4.0.14.Final
Merge pull request #446 from softprops/netty_4.0.14

bump netty 4.0.13.Final -> 4.0.14.Final
Setting a Realm shouldn't override existing Authentication headers, close #448
Release ByteBuf when reading from DefaultResponseBodyPartFactory
Drop sync connect as it's a performance killer with Netty 4
Get rid of intermediate Part API
Don't create byte arrays for computing multipart Content-Length
Make Parts immutable
Rework Part API, first take
Fix test broken for Grizzly after f4ad6ad876dffd7d05f7e9769b984c5d52d01333
Use a switch with enum, not if/else if
minor clean up
Use Charset.forName in order to get unchecked UnsupportedCharsetException
Clean up Charset handling
Get rid of "betty patch", use Netty's ChunkedStream
Have Netty bypass Body API in case of a File or a Stream
Compute request and body together and wrap them into NettyRequest
When switching from http to ws, only replace first http occurrence in the url
Share applyResponseFiltersAndReplayRequest method for WS too
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