docs: make changelog up to date

CHANGELOG.md

@@ -32,6 +32,7 @@ it finds the path to `binName` in $PATH
 - Alias expansion with quotes
 - Add full command to history in the case of incomplete input
 - `hilbish.exec()` now has a windows substitute
+- Fixed case of successful command after prompted for more input not writing to history
 
 ### Changed
 - The minimal config is truly minimal now
@@ -54,6 +55,30 @@ as it functions the same but is OS agnostic
 - `hilbish.flag()` has been removed
 - `~/.hprofile.lua` has been removed, instead check in your config if `hilbish.login`
 is true
+- `hilbish.complete()` has had a slight refactor to fit with the new readline library.
+It now expects a table of "completion groups" which are just tables with the
+`type` and `items` keys. Here is a (more or less) complete example of how it works now:
+  ```lua
+    hilbish.complete('command.git', function()
+      return {
+        {
+          items = {
+            'add',
+            'clone'
+          },
+          type = 'grid'
+        },
+        {
+          items = {
+            ['--git-dir'] = {'Description of flag'},
+            '-c'
+          },
+          type = 'list'
+        }
+      }
+    end)
+  ```
+  Completer functions are now also expected to handle subcommands/subcompletions
 
 ## [0.7.1] - 2021-11-22
 ### Fixed