Replaced reload section with proper function.

Added completion for reload.
Fixed order in completion
Added unit tests for completion
The variable BASH_IT_AUTOMATIC_RELOAD_AFTER_CONFIG_CHANGE has to be unset.

test/lib/composure.bats

@@ -5,5 +5,5 @@ load ../../lib/composure
 
 @test "lib composure: composure_keywords()" {
   run composure_keywords
-  assert_output "about author example group param version"
+  assert_output "about author example group param reload version"
 }