Added zoom shortcut

src/docs/howTo/shortcuts.md

@@ -9,6 +9,8 @@
 | M                | Measure Tool |
 | Q                | Pointer Tool |
 | N                | Note Tool    |
+| +                | Zoom In      |
+| -                | Zoom Out     |
 
 ## Fog Tool
 

src/docs/releaseNotes/v1.8.0.md

@@ -53,6 +53,7 @@ A GM can toggle this setting by clicking on a note once it is on the map and cli
 - Notes are now shown above drawings to prevent the case where you can't move your note because a drawing was on top of it.
 - Notes text is now left aligned and text scales down further to allow for more text to be shown per note.
 - Added an information dialog that is shown when joining a game that has timed out.
+- Added a new zoom shortcut with the + and - keys.
 - Updated how to page with general site settings.
 - Moved shortcuts on how to page into its own section with all shortcuts listed.
 - Fixed a bug that would cause you join a game multiple times when using the back function in a browser.