Set up most of the autocmd events in one group

test/test_ale_toggle.vader

@@ -32,12 +32,8 @@ Before:
   \}]
   let g:expected_groups = [
   \ 'ALECleanupGroup',
-  \ 'ALECursorGroup',
+  \ 'ALEEvents',
   \ 'ALEHighlightBufferGroup',
-  \ 'ALERunOnEnterGroup',
-  \ 'ALERunOnFiletypeChangeGroup',
-  \ 'ALERunOnSaveGroup',
-  \ 'ALERunOnTextChangedGroup',
   \]
 
   function! ToggleTestCallback(buffer, output)
@@ -60,7 +56,7 @@ Before:
     let l:results = []
 
     for l:line in split(l:output, "\n")
-      let l:match = matchlist(l:line, '^ALE[a-zA-Z]\+Group')
+      let l:match = matchlist(l:line, '^ALE[a-zA-Z]\+')
 
       " We don't care about some groups here.
       if !empty(l:match)
@@ -139,13 +135,7 @@ Execute(ALEToggle should reset everything and then run again):
   AssertEqual [], getloclist(0), 'The loclist was not cleared'
   AssertEqual [0, []], ale#sign#FindCurrentSigns(bufnr('%')), 'The signs were not cleared'
   AssertEqual [], getmatches(), 'The highlights were not cleared'
-  AssertEqual
-  \ [
-  \   'ALECleanupGroup',
-  \   'ALEHighlightBufferGroup',
-  \   'ALERunOnSaveGroup',
-  \ ],
-  \ ParseAuGroups()
+  AssertEqual g:expected_groups, ParseAuGroups()
 
   " Toggle ALE on, everything should be set up and run again.
   ALEToggle