Some termination signal bugs have been fixed.
Some user interface features have been added.
There is a correction in the documentation, and
the Extract Opt.pm module is required.
Elca now reads commands from standard input, if any are given. Elca can now
save actual expressions to the history file if is quiting by CTRL-C (SIGINT).
Some bugs in reading configuration were fixed. Some bugs regarding reading of
external modules were fixed.
Elca now has a "no-real-time" mode, whic is useful for some types of Perl
expression evalution. If Elca is run in non-interactive mode (where expressions
are specified on the command line), then Term::ReadLine is no longer
initialized. Some useful options were added.
