added change for #91

Author: craigbarratt

docs/new_features.rst

@@ -33,3 +33,5 @@ Bug fixes since 1.0.0 in master include:
   inside HASS, reported by @github392 (#87).
 - the deprecated function ``state.get_attr`` was missing an ``await``, which caused an exception; in 1.0.0 use
   ``state.getattr``, reported and fixed by @dlashua (#88).
+- the ``packaging`` module is installed if not found, since certain HASS configurations might not include it;
+  fixed by @raman325 (#90, #91).

docs/reference.rst

@@ -297,7 +297,7 @@ Optional arguments are:
   without the trigger expression having to be ``False`` between triggers. A value of ``0`` requires
   the expression become ``False`` between triggers, but with no minimum time in that state.
   If the expression evaluates to ``True`` during the ``state_hold_false`` period, that trigger is
-  ignored, and when the expression next is ``False`` the `state_hold_false`` period starts over.
+  ignored, and when the expression next is ``False`` the ``state_hold_false`` period starts over.
 
   For example, by default the expression ``"int(sensor.temp_outside) >= 50"`` will trigger every
   time ``sensor.temp_outside`` changes to a value that is 50 or more.  If instead