v4.2.0

• default is a filter, not a backwards-looking call — --migrate now
  converts both Go spellings, {{ .X | default "y" }} and
  {{ default "y" .X }}, to {{ X | default("y", true) }}. That second
  argument makes Jinja's own filter mean what sprig's default means —
  substituting for any empty value, not only an unset one — so a migrated
  Taskfile renders what it always did while reading in the natural order. A Go
  {{ default "y" }} with no value at all now renders y, as sprig does,
  instead of failing.
• Breaking: the sprig-ordered default(fallback, value) function is gone.
  A Taskfile written or migrated against 4.1.0 / 4.1.1 that calls it now fails
  with unknown function; write the value first and add , true —
  X | default("y", true).
• trunc and regexReplaceAll work as filters — s | trunc(n) and
  s | regexReplaceAll(pattern, repl), so a Jinja Taskfile no longer has to
  spell either as a sprig-ordered call. The functions keep working as before,
  and a Go Taskfile's {{ .P | trunc 3 }}, which used to fail to render, now
  works and migrates to {{ P | trunc(3) }}.
• A file's template dialect now covers the vars: it passes to an
  includes: entry and the caches: models it defines. A tree partway
  through --migrate works: the migrated file no longer fails on its own
  include vars, and a not-yet-migrated task no longer fails on the cache URL it
  inherits. A file that declares one dialect but writes those in the other used
  to be read as Go regardless, and now errors — run task --migrate on it.