Collect 4.7.0 release notes.

doc/src/history.adoc

@@ -3,6 +3,40 @@
 
 == Version 4.7.0
 
+* *New:* Add vc143, aka VS2022, aka cl.exe 17.x toolset support. Includes
+  building engine and automatic detection of the prerelease toolset.
+  -- _Sergei Krivonos_
+* Fix use of `JAMSHELL` in gcc toolset.
+  -- _René Ferdinand Rivera Morell_
+* Fix compiling b2 enging such that it rowks when run in cross-architecture
+  emulation context. I.e. when running arm binaries in QEMU 64 bit host.
+  -- _René Ferdinand Rivera Morell_
+* Default to 64bit msvc on 64 bit hosts.
+  -- _Matt Chambers_
+* Remove `/NOENTRY` option for resource only DLLs to allow correct linking.
+  -- _gnaggnoyil_
+* Fix redefinition error of `unix` when compiling engine on OpenBSD.
+  -- _Brad Smith_
+* Fix building with clang on iOS and AppltTV having extra unrecognized
+  compiler options.
+  -- _Konstantin Ivlev_
+* Add missing Boost.JSON to `boost` support module.
+  -- _Dmitry Arkhipov_
+* Add arm/arm64 target support in clang-win toolset.
+  -- _Volo Zyko_
+* Avoid warnings about threading model for qt5.
+  -- _psandana_
+* Unify Clang and GCC PCH creation.
+  -- _Nikita Kniazev_
+* Move Objective-C support to GCC toolset.
+  -- _Nikita Kniazev_
+* Support values for instruction-set feature for Xilinx ZYNQ.
+  -- _Thomas Brown_
+* MIPS: add generic mips architecture.
+  -- _YunQiang Su_
+* Fix preprocessing on MSVC compiler.
+  -- _Nikita Kniazev_
+
 == Version 4.6.1
 
 * Fix building b2 engine with cygwin64.