Changes in version 1.29:

The new option '--continue-on-errno' has been added.

If ddrescue exits because of a fatal read error, it now prints the value of
the variable 'errno' so that it can be used as argument to
'--continue-on-errno'.

When using '--ask' and '--verbose', print rescue options before asking user.

Option '--log-reads' now records the value of errno if different from EIO.
(The four changes above suggested by Christian Franke).

The effect of option '-O, --reopen-on-error' has been extended to all phases.

It has been documented in the manual that '--reopen-on-error' may be needed
when using '--continue-on-errno'.
