v3.1

• Fix documentation of /dev/random and /dev/urandom
• Background jobs
• Parallel patterns: ParMapReduce, ParTakeFirstResult, ParDo

v3.0

• Added ignoring of SIGPIPE for architectures where standard
  behaviour is to terminate the process.
• Completely new configure process with our own autoconf scripts
• IO_gettimeofday new
• IO_gmtime and IO_localtime new
• Check for IO_getpid and IO_getppid and IO_kill
• Load dynamic module earlier (in init.g at the beginning)
• Release revision 342 as 3.0: 8.4.2009

v2.3

• Require GAP >= 4.4.9 in PackageInfo.g
• Change addresses to St Andrews.
• Add understanding of chunked transfer encoding.
• Make IO compile on FreeBSD.
• Added IO_getpid, IO_getppid, IO_kill.
• Change license to GPL V2 or later.
• Released revision 328 as 2.3: 3.10.2007

v2.2

• Fixed a serious bug with the generic object pickler.
• Released version 296 as 2.2: 2.4.2007

v2.1

• Fixed bug with IO_stat, that time stamps are usually >= 2^28.
• Add framework for other packages to install picklers and unpicklers
  even if they are loaded before the IO package.
• Pickling/Unpickling of functions and operations (methods still a problem)
• Leave out last argument of IO_GenericObjectUnpickler because it
  was never needed, return either IO_Error or unpickled object. This
  changes the semantics!
• Pickling/Unpickling of WeakPointerObjects
• Pickling/Unpickling of permutation groups (including Size and base of
  StabChain)
• Pickling/Unpickling of matrix groups (only generators and Size)
• Pickling/Unpickling of finite fields
• Set Host component of HTTP request header by default of the name
  of the server argument in SingleHTTPRequest.
• Alexander Konovalov's CheckForUpdates function.
• Released revision 289 as 2.1: 26.2.2007

v2.0

• See to SIGCHLD signal handler in Popen, Popen2, and Popen3
• WaitPid in PipeThrough*
• Loop around IO_select calls to ignore EINTR error
• Sort out __stack_chk_fail_local gcc 4.1 problem
• case insensitivity in header field names in HTTP protocol
• fix bug that crashed GAP when starting another process or terminating
  GAP after calling Popen*
• Added http protocol test.
• Add tst/platform.g to have a check of "standard things"
• include more headers with #include
• take care of PIPE_BUF variable (might not exist on platform!)
• Improved installation instructions in the manual and the README file.
• Add proper preface to the manual
• Fix documentation of Popen*
• Clean up code for Popen, create IO_ForkExecWithFDs
• IO_StartPipeline
• IO_StringFilterFile, IO_FileFilterString
• paths to executables do PATH lookups using IO_FindExecutable
• IO_FilteredFile to create a File object which filteres through a pipeline.
• Let IO_Close automatically call IO_WaitPid under certain circumstances.
• Released revision 238 as 2.0: 12.12.2006

v1.6

• New binding IO_fcntl with corresponding constants in IO
  (this is necessary for switching a file descriptor to O_NONBLOCK)
• In IO_WriteNonBlocking only try to send PIPE_BUF bytes instead
  of full buffer to avoid blocking (is this the solution?)
• Functionality to pipe a string through an external command
  using I/O multiplexing
• New client side HTTP protocol implementation
• Use chapters in documentation
• New functions IO_PipeThrough and IO_PipeThroughWithError to pipe
  a string through a process.
• Released version 1.6: 16.11.2006