Several changes:

    - added a test case for the http client and server
    - WResource: handleAbort() allows aborted requests to be handled
    - Http::ResourceContinuation::haveMoreData(): allow an individual request to be continued
    - Http::Client: allow response data to be processed incrementally
    - fix #3613: WDialog problems without javascript
    - fix browser detection of Qt5 browser (#3287)
    - fix CLang + boost 1.57 build
    - fix namespace scoping (#3655)
    - fix enable() to take into account ancestor enabled state (#3629)
    - show resize handle in bootstrap themes (#3653)
    - keep track of dialog order also server-side (#3652, Bruce Toll)
    - fix treetable layout issue (#3651)
    - fix WTreeNode::expand() on an empty node (#3650)
    - fix internal path url encoding regression (#3638)
    - added constructor for WInPlacEdit that configures buttons (#3418)
    - fix WTableView::setRowHeight() messes up layout (#3628)
    - fix WPanel bootstraptheme layout glitch (#3649)
    - fix XHTML tooltip in default CSS theme
    - WTemplate: store bound strings as WString so they translate properly