* Support macro params in filter run prefixes and support substitution for variables set by filter run prefixes
* feat: add support macro parameters and variable substitution for all filter run prefixes
* fix: rename options argument to opts for disambiguation
* feat: add support for macro params to cascade filterrun prefix
* Extends :map filter run prefix to provide the variables index, revIndex and length to bring it into line with :reduce
* update :maps examples
* docs: fix formatting issue with documentation