v0.19.6

Fixed

• A configured catalog formatter now displaces poly's generic tree-sitter reindenter instead of
  chaining with it. Formatters run in sequence and the whole chain repeats to a fixed point, so a
  language served by both poly's fallback reindenter and an external formatter had the two fighting
  over indentation on every pass. This is what kept Elixir from converging: even with [tools.mix]
  declared, poly reindented the file and mix format reindented it back. The fallback is dropped only
  when the catalog tool's binary is actually on PATH, so a configured-but-missing tool leaves the
  fallback in place rather than silently dropping all formatting for the language.
  (crates/poly-core/src/runner.rs, crates/poly-core/src/engine.rs,
  crates/poly-core/src/engines/catalog_tool/mod.rs)

  Elixir projects should now declare the formatter that owns the language:

  [tools.mix]
  enabled = true
  root = "packages/elixir"