Merge pull request #7617 from haskell/prune-old-dotfiles

remove unnecessary dotfiles, add to .gitignore

.arcconfig

-{
-  "repository.callsign" : "CABAL",
-  "phabricator.uri"     : "https://phabricator.haskell.org"
-}

.ghci

-:set -icabal-install -icabal-install/main
-:load Main

.ghcid

---command "ghci -j4 +RTS -A128m"

.gitignore

@@ -26,6 +26,11 @@ cabal-tests.log
 /cabal-install/Setup
 /cabal-install/source-file-list
 
+.stylish-haskell.yaml
+.stylish-haskell.yml
+.ghci
+.ghcid
+
 # Output of release and bootstrap
 _build
 
@@ -69,3 +74,6 @@ register.sh
 
 # benchmarks
 bench.html
+
+# Emacs
+.projectile
\ No newline at end of file

.mention-bot

-{
-  "userBlacklist": [
-    "BardurArantsson"
-  , "SyntaxPolice"
-  ]
-}

.stylish-haskell.yaml

-steps:
-  - imports:
-      align: group
-      list_align: after_alias
-      long_list_align: new_line
-      empty_list_align: right_after
-      list_padding: module_name
-  - language_pragmas:
-      style: vertical
-      remove_redundant: true
-  - trailing_whitespace: {}
-columns: 160
-language_extensions:
-  - DataKinds
-  - DerivingStrategies
-  - ExplicitForAll
-  - FlexibleContexts
-  - GeneralizedNewtypeDeriving
-  - MultiParamTypeClasses