Initial directory structure.
Initial upload base on rcfiles 200.
Dot directories renamed to make them visible.
Fixed header and comments.
Added configuration variable scd_autoindex.
Added list mode so that gvim can use its own selection dialog.
check data consistency to handle --help and such.
allow wildcards in unquoted arguments.
Do not execute with empty cmd.
Improved vim plugin documentation.  Added configuration variable scd_command.
Removed unnecessary history options.
Added hashbang and Id keyword, no change in the code.
SCD_HISTFILE can be overloaded with environment variable.
History file is not written unless there is a new non-repeating record.
Do not unset the internal functions, just mangle their names.
Typo in recursive indexing.
Switched from select to a single letter directory selection.
Reduced the default SCD_MENUSIZE to 20.
Using "print -lD" for generating abbreviated directory names.
Escape the special characters in the directory name for the cd command.
Using the :a modifier to get the absolute path.  No need for unfunction.
Optimized by appending to SCD_HISTFILE instead of full rewrites.
Avoid unterminated lines in the SCD_HISTFILE.