v4.0.1

Small bugfix release that fixes an oversight:

    dstruct Bar, wThing, X == Y

Because of the = within the third argument, this would be considered a “named instantiation” and complain.
This has been fixed by changing the criterion to “third argument must contain a = and start with .”.

This will still trip with e.g.

    dstruct Bar, wThing, .local == .other

...but that can now be worked around by adding parentheses:

    dstruct Bar, wThing, (.local == .other)