Deferring execution of defaults.
Using let-keywords* for repl parameters.
Using (chibi string) in (chibi mime).
Don't treat bare () as the entire repl input as a literal.
Fixing inexact comparisons to handle different signed arguments.
Fixing (atan -0.0 -1.0) case.
Using standard @ instead of ^ as the SXML attributes symbols.
This was never a portable aspect of SXML before because in earlier
standards @ was an illegal identifier, but it is allowed in R7RS.
Scribble requires escaping with @|@| to pass through a raw @ symbol.
Considering using \ as the default scribble escape instead.
(chibi mime) now case-folds then interns headers to match normal SXML.
Changing scribble notation to use TeX-style \ instead of @.
Documentation looks much nicer now (or at least more familiar).
Test cases become ugly because we need to double the escape in
strings.  Also escaping requires \"\\" which in a Scheme string
gets written \\"\\\\".  Consider \\ as a shortcut (which is still
\\\\ in a string).
Allowing an abstract thunk interface to run-net-server.
Adding an interface to socketpair.
Adding additional constants and the ability to set addrinfo hints.
Setting the default hints to AI_PASSIVE so that standard listeners
(including those created implicitly by run-net-server) can listen
on all addresses.
Adding sockaddr-port.