Fix auth handling during OfferCreate (RIPD-414)
Make bind_handler variadic ctor explicit
Add HTTPHeaders::build_map
Enable asynchronous handling of HTTP-RPC (RIPD-390)
* Activate async code path
* Tidy up HTTP server code
* Use shared_ptr in HTTP server
* Remove check for unspecified IP
* Remove hairtrigger
* Fix missing HTTP authorization check
* Fix multisocket flags in RPC-HTTP server
* Fix authorization failure when no credentials required
* Addresses RIPD-159, RIPD-161, RIPD-390
Set version to 0.26.1
Fix unhandled exception in async HTTP server (RIPD-475)
Add owner_funds to subscription streams (RIPD-377)
Merge branch 'release-next' into release

Conflicts:
	src/ripple/module/app/paths/cursor/ForwardLiquidity.cpp
	src/ripple/overlay/tests/peer_info.test.cpp
	src/ripple/unity/http.h
Set version to 0.26.2
New command line LedgerTool. (RIPD-243)

* Retrieve and process summary or full ledgers.
* Search using arbitrary criteria (any Python function).
* Search using arbitrary formats (any Python function).
* Caches ledgers as .gz files to avoid repeated server requests.
* Handles ledger numbers, ranges, and special names like validated or closed.
Convert rvalue to an lvalue. (RIPD-494)
* The rvalue gets destructed as soon as "rc" is constructed.
Update npm tests & config to pass in Windows. (RIPD-209)
* Extend timeout for WebSocket test.
* Windows networking doesn't like connecting to 0.0.0.0. Use 127.0.0.1
* Additional command line options in config. Can potentially be used to run rippled in a debugger.
Compile git tags now include name and branch. (RIPD-493)
Add ledger.history.mismatch insight statistic
Make sure we update mTNByID when we replace the root
Improve parallelization of getRippleLines
Merge remote-tracking branch 'upstream/release' into tmp
Fix a unit test warning
Set version to 0.26.3-rc2