* Editor mode is no the default
* Use -i or --interactive or -e fish to edit function in interactive
mode
* tmpname is now created with random number added and check that file
do not already exist
* check $TMPDIR existence and put /tmp if it does not exist
* There is an undocumented feature to use functions, started with dash.
Introduce necessary changes to funced, functions, def_function()
in order to make it work properly.
* Delete editor guessing. Use $EDITOR variable or -e key
