New in this release (v1.00)
---------------------------
1) A vcd-like quick directory changer. The new command "ycd <directory>"
   performs a quick change to the directory specified anywhere on the same
   drive. When the command is first issued on any drive, a directory scan
   is carried out and the results stored in a file named "YCD_DAT" in the
   root directory of that drive. Subsequently, YCD_DAT will be used whenever
   a ycd is called. If you make changes to the directory structure, you can
   cause yaos to rescan by deleting the YCD_DAT file. Currently, ycd do not
   support cross directory searches.
   [Note: If you are on a networked drive and do not have write permissions,
   using ycd will result in a directory scan every time. (I have not personally
   tested ycd on a networked drive.)]

2) Implemented CMD.EXE's F1 functionality. To search through previously used 
   commands, just type in the first few characters and hit the F1 function-key
   to cycle through matches. You can also use the Up/Down arrow keys to do
   the same thing. As a result, command editing after a search no longer
   begins at the end of the commandline.

3) A command selected in a history popup window (using <Alt-h>) is not 
   executed immediately. This allows you to edit the command before issuing it.

4) Wrap-around now occurs in all popup windows.

New in release (v0.99)
----------------------
1) Bug fixes: "!.." works if ".." is in cmdline history.
   (plus a few minor fixes)

2) 'x' no longer exits yaos. Both 'exit' and Alt-x do. 

3) Environment variable expansion works now. For example, you can do something
   like this:   set path=%path%c:\mydir;

4) No longer exits unnecessarily when Ctrl-C is pressed while executing a
   command. In fact, yaos mask out SIGINT and SIGBREAK signals.

5) Use of '&' to detach a process like in Unix.

6) New command "kill <pid>" that destroys the process whose id is <pid> 
   (<pid> can be specified in hexadecimal (e.g., 0x261) or 
   decimal (e.g., 609). Make use of the OS/2 program "pstat /c" to find out
   the pids of active processes.

New in release v0.98a
---------------------
This release fixes a bug in v0.98 relating to writing aliases to files.
It has no additional feature over v0.98.

New in release v0.98
--------------------
1) The '-r <filename>' option is obsolete. In its place, a new option
   '-s <filename>' is added. The file may contain both alias definitions
   and environment variables settings.

2) The command "alias -r <filename>" is now replaced by a more general
   command called "source <filename>". The contents of <filename> may
   contain both alias definitions and environment variables settings.

3) Alias expansions will not be shown if the '-q' flag is used.

4) Alias definition in a file requires the "alias" keyword. Previously, an
   alias definition in a file looked like:
           c=cls
   Now, it must be specified as:
           alias c=cls OR
           alias c cls

5) Verify on/off settings work now.

6) Hitting the <Esc> key clears the command line.



