Fix #2084 - Disable mix by default, as it causes too many problems

autoload/ale/linter.vim

@@ -32,6 +32,7 @@ let s:default_ale_linter_aliases = {
 " NOTE: Update the g:ale_linters documentation when modifying this.
 let s:default_ale_linters = {
 \   'csh': ['shell'],
+\   'elixir': ['credo', 'dialyxir', 'dogma', 'elixir-ls'],
 \   'go': ['gofmt', 'golint', 'go vet'],
 \   'hack': ['hack'],
 \   'help': [],