ChangeLog.md: update with details on specific linters

ChangeLog.md

-# lint-utils
+# ChangeLog for lint-utils
 
 ## v0.1.0.0
 
@@ -6,3 +6,17 @@
   for haskell, nix and dhall.
 * `writePorcelainOrDieCheck` will run a `command` on some `src`, and die
   with some `advice` if the execution fails.
+* `writePorcelainLinter` is shorthand for
+  `"find . -name '${find}' | xargs ${exec}";`, where find and exec
+  can be specified by the user.
+* Add specific porcelain linters with default `find` presets:
+  `cabal-fmt` with `find ? "*.cabal".
+  `dhall-format` with `find ? "*.dhall".
+  `fourmolu` with `find ? "*.hs".
+  `hpack` with `find ? "package.yaml".
+  `nixpkgs-fmt` with `find ? "*.nix".
+  `ormolu` with `find ? "*.hs".
+  `stylish-haskell` with `find ? "*.hs".
+* Add two other linters:
+  `hlint`, which runs `hlint` on the specified `src`.
+  `werror`, which adds `--ghc-options=-Werror` to a cabal project.