finalize changelog for v3.4.0

add changelog entry for v3.3.1

interp: allow running Reset before Run

It can make sense, for example to make copies of a new runner to be used
later.

While at it, I noticed that Subshell failed to initialize the Vars map,
meaning that it wasn't filled at the end of Run.

Fixes mvdan#704.

add changelog entry for v3.3.0

add release notes for v3.2.4

I messed up the v3.2.3 release; forgot to backport the Dockerfile
changes, and also forgot to document the backported panic fix in the
expand package.

Let's pretend v3.2.3 didn't happen, since the tag was already pushed,
and do a v3.2.4. v3.2.3 isn't terribly broken either, so no need to
retract it.

add release notes for v3.2.3

add release notes for v3.2.2

add release notes for v3.2.1

syntax: fix hang parsing single quotes in parameter expansions

This regression was introduced in 5bb742d, since we didn't include
enough test cases. In particular, one where the single quote directly
followed the forward slash token.

Fixes mvdan#626.

release 3.2.0