Add an experimental input merge transformer
Add file missing from prev commit
Merge branch 'master' into merge-inverse
Merge branch 'master' into merge-inverse
Merge branch 'master' into merge-inverse
Fix issues found by devtools
Merge branch 'master' into merge-inverse
Extract private Transformer::Anima::Dump#invoke
Merge branch 'merge-inverse'

@mbj I decided to merge this in because
it works in my app and I have an initial
version of a transitive int/string coercer
that I'm going to push too. IMO it doesn't
really make sense to keep a lot of branches
at this early point. I hope you're ok with
that
Add transitive Transformer::Coerce::{ParseInt, IntToString}

This patch does not yet include a dynamic regex that checks the string
before coercing it to an integer.