[ANN] sexp_processor 4.16.1 Released

sexp_processor version 4.16.1 has been released!

* home: <GitHub - seattlerb/sexp_processor>
* rdoc: <sexp_processor-4.16.0 Documentation>

sexp_processor branches from ParseTree bringing all the generic sexp
processing tools with it. Sexp, SexpProcessor, Environment, etc... all
for your language processing pleasure.


### 4.16.1 / 2022-04-09

* 1 minor enhancement:

  * Reworked ParseTreeTestCase's notion of versions to make it easier to extend.