This file lists bigger/noteworthy changes, only...

Version 0.9 (upcoming)
dyncall:
  o ARM64 support (AAPCS64 on Linux, Apple's derived version on iOS)
  o PPC64 support (thanks Masanori!)
  o introduced dcArgF and dcVArgF for flexible/convenient argument binding (works like dcCallF/dcVCallF but without the function call)
  o added -fPIC by default for FreeBSD
  o PPC32 linux syscall support
dyncallback:
  o ARM64 support (AAPCS64 on Linux, Apple's derived version on iOS)
  o PPC64 support (thanks Masanori!)
  o PPC32 System V support (Linux)
  o fix for PPC32 Darwin/OS X
  o more intuitive specification of callback return type
doc:
  o added ARM64 support info and calling convention documentation
  o added PPC64 support info
  o cleanup, brought all up to date, etc.
tests:
  o callf test covers new argf interface
buildsys:
  o more flexible testsuite build and 'pack' target for convenience
  o fixes/additions for OS X universal builds
  o added iOS universal build support for armv7/arm64
  o helper script for generic .elf -> EBOOT.PBP creation for PSP
  o Sun make fixes for C++ code in test suite
bindings:
  o erldc: Erlang binding (thanks Erik!)

Version 0.8
buildsys:
  o big simplification make-based build system, no more distinct GNU and BSD makefiles anymore
  o new, much simpler ./configure for new make-based build-system
  o support for in-source and out-of-source builds for make-based build systems
  o made configure.bat guess x64 as target arch for x64 windows hosts
  o based more sources on portasm generation
dyncall:
  o fix for ARMv7 Thumb-2 code (tested on iPhone 4 CDMA / iOS 6.0.1)
  o bugfixes for -O2 builds for SPARC-v9 and SPARC-v7 
  o new optimized call kernel for SPARC-v9 without conditionals
  o bigger refactoring and optimization of mips o32
  o x64 optimizations
dyncallback:
  o added callback support for plan9
  o big cleanup, removal of duplicate files after introduction of portasm
  o include path fixes for public facing APIs (removed relative paths)
doc:
  o cleanup of manual and corrections
  o added info about newly supported and/or tested platforms (e.g. FreeBSD on ARM)
  o restructured folder layout for documentation
  o added API doc for dyncallback and dynload
  o added manpages for dyncallback and dynload
tests:
  o added arm/thumb interwork test suite
bindings:
  o godc: added bindings for Go
  o rbdc: fixed and extended ruby bindings
  o shdc: renamed shell binding to shdc and added feature to list shared-objects' symbols

Version 0.7
architecture:
  o added subproject: portasm - portable (GNU AS,+Apple and MASM) assembly framework  
  o added subproject: autovar - predefined macro framework (was dyncall_macros.h)
  o added support for sparc (32-bit) (tested on linux/debian,openbsd,solaris)
  o added support for sparc (64-bit) (tested on linux/debian,openbsd,solaris)
  o added support for Solaris and SunPro compiler for i386, x86_64, sparc and sparc64
  o improved auto-detection via preprocessor defines
dyncall updates:
  o uses portasm (GNU,Apple,Microsoft) common sources for x86,x64,ppc32,arm32_arm
  o bug fixes for x64/win64 calling convention
  o added support for mingw32-w64 on x64
  o improved cdecl x86 calling convention: stack always 16 byte aligned
  o updated API and initial support for structs (for x86/AMD64)
  o initial support for syscalls on x86, added x86 int80h linux/bsd
  o added Minix port (stable)
  o optimized vector buffer for small type pushing
  o minor fix for amd64/sysv: alignment to 32-byte
  o bug fix for ppc32/sysv: ellipsis calls work now
  o updated API, introduced DC_CALL_C_ELLIPSIS_VARARGS
  o changed interface: dcMode does not reset internally anymore
dyncallback updates:
  o uses portasm for x86,x64
  o added Solaris/x86/sunpro port (stable)
  o added Minix port (unstable)
  o callback support for Darwin/ppc32
  o updates source, uses relative includes
dynload updates:
  o fixes for missing includes (dyncall_alloc.h)
  o fixes for self-resolving symbols on windows
  o removed Dbghelf.lib dependency
  o bug fixes for cygwin/x86
  o fixes for beos/haiku
  o no dependencies to libdyncall sources.
buildsys additions:
  o added zero-config (BSD,GNU,SUN) make files (Makefile.embedded)
  o added in/out-of-source configure2 w/ (BSD,GNU) make files (Makefile.generic')
  o added bootstrap lua script (download/build) 
  o Nmakefile: more tests included (resolve_self)
  o improved cross-compilation for iOS (upgrade to 4.3 sdk)
  o darwin 8.0 support
  o added 'install' support for Makefile.embedded
buildsys/gmake updates:
  o added support for msvc/x64 tool-chain
  o default settings for build-dir changed to '.'
  o cleanup: removed top-level Make{Prolog,Epilog,Rules} files and updated all sub-projects and tests
  o added support for DESTDIR staging installation
  o added support for manual page installation
buildsys/cmake updates:
  o updated find module scripts (see cmake/Modules)
  o added support for using dyncall as sub-project (via *Config.cmake files)
    see details in README.CMake
  o fixes for msvc and ml
  o fixes for CPack
  o fixes for universal builds on Mac OS X
  o supports SunPro with *.S files.
  o added experimental 'dynMake' portable make-based build-system (not stable, yet)
documentation updates:
  o added dyncallback documentation
  o updated dyncall documentation 
  o minor updates
tests:
  o added flexible test suite for calls (call_suite) based on Lua and C
  o added syscall test
  o updates to resolve-self test (adding additional link flags to export symbols)
  o improved dir name portability (renamed plain_c++ -> plain_cxx) 
  o renamed *.cpp -> *.cc files (OpenBSD/Sun make has no implicit rules for cpp)

Version 0.6
building:
  o new build systems: CMake and Plan9's mk
  o buildsys/gmake tool chain update: pcc and iphone sdk
  o x64 bugfix: added "-fPIC" even for static libs
dynload updates: 
  o enum symbols update: Mach-O and Win64 (thanks Olivier)
  o numerous convenience changes to dynload interface (thanks Olivier)
  o added support for resolving application images itself
dyncall updates:
  o new platform support: arm/iphone (armv6), x86/Plan9
  o new mips calling conventions: oabi, n64 (both endian models)
  o cleanup: unexported functions in MASM files, b/c export not needed (thanks Olivier)
  o interface update: added error reporting facility 'dcGetError'
  o bugfix for ppc32/sysv: ellipsis calls were broken
  o interface update: added new abstract mode for ellipsis calls (DC_CALL_C_ELLIPSIS) 
docs:
  o comprehensive update
tests:
  o plain: split "plain" test up in C and C++ part
  o callbacksuite: added multiple configuration support for callback_suite

Version 0.5
  o renamed arm9 stuff to arm32
  o added non-EABI ABI for arm32 (before, EABI was the default implementation)
  o added dyncallback support for x64/windows (thanks Olivier), x64/darwin, arm32/arm, arm32/thumb
  o synced documentation again with current state of the source (lots of small changes)
  o updated ruby binding to current state of signature string (still some features missing, though)
  o added a couple of new options to configure scripts (e.g. prefix-bd, new targets, etc.)
  o darwin universal binary support
  o added new tests callback_plain and calback_suite
  o added Haiku/BeOS support

Version 0.4
  o added 'doc' makefile target for coherency and ease of use
  o fixed nmake buildfiles and configure.bat (were out of date and wrong)
  o test suite clean up (GNUmake, BSDmake):
    target "config" modified, phony without dependencies to other builds
  o bugfix: GNU fastcall calling convention for float and double arguments
    was wrong. no skip of register.
  o update: x86win32* suite tests are built on cygwin now, added total result output
  o signature types change:
    C Strings: 'S' -> 'Z'
    long: 'l' -> 'j'
    long long: 'L' -> 'l'
    added unsigned integer type signature characters: upper case encoding  
  o added: callbacks component (support only for some platforms ATM)
  o added: test cases for alloc_wx, thunk
  o updated Documentation

Version 0.3
  o added Linux PPC32 support
  o added ARM THUMB mode support
  o cosmetic changes, documentation updated
  o bugfix: on cygwin exported C symbols in GNU as are prefixed with '_' now.
  o removed scons build support

Version 0.2
  o added scons build support
  o configure variables all prefix CONFIG_* now
  o configure variable INSTALL_DIR changed to INSTALL_PREFIX
  o configure (shell version) option "--prefix" changed to "--prefix=<path>"

Version 0.1:
  o initial release