Beef up a few docstrings in uiop/image.
On ECL, make load-fasl-op the default *load-system-operation*.
Have println and writeln flush their output stream.
Tweak the release script.
Bump version to 3.1.0.88
Have force-not take precedence over force.
Not only is it the Right Thing™ (see lp#1184002), it makes code simpler.
Actually, the two are one and the same.
    https://bugs.launchpad.net/asdf/+bug/1184002
chdir on SBCL: require sb-posix before using it.
ensure-function: a hash-table can be seen as a function (to be used by ASDF).
Add support for *immutable-systems*.
Add regression tests for the feature.
Change the meaning of :force-not t to mean "anything but current system".
Bump version to 3.1.0.89
ECL: don't enable load-fasl-op with the bytecode compiler.
Bump version to 3.1.0.90