Changes in version 1.5:

The "a", "c" and "i" commands have been fixed. (When used in a global
command list, the commands following them in the list were ignored).

The "e" command has been fixed. (It quitted when invoked a second time
with a modified buffer).

The new option "--restricted" has been added.

"red" has been converted to a script invoking "ed --restricted".

Description of ed in the manual has been changed.

Obsolete posix tests have been removed from testsuite.