Update docs

API-INTERNAL.md

@@ -115,7 +115,8 @@ whatever it is we attempted to do.</p>
 </dd>
 <dt><a href="#removeNullValues">removeNullValues()</a> ⇒</dt>
 <dd><p>Removes a key from storage if the value is null.
-Otherwise removes all nested null values in objects and returns the object</p>
+Otherwise removes all nested null values in objects,
+if shouldRemoveNestedNulls is true and returns the object.</p>
 </dd>
 <dt><a href="#prepareKeyValuePairsForStorage">prepareKeyValuePairsForStorage()</a> ⇒</dt>
 <dd><p>Storage expects array like: [[&quot;@MyApp_user&quot;, value_1], [&quot;@MyApp_key&quot;, value_2]]
@@ -367,7 +368,8 @@ Notifies subscribers and writes current value to cache
 
 ## removeNullValues() ⇒
 Removes a key from storage if the value is null.
-Otherwise removes all nested null values in objects and returns the object
+Otherwise removes all nested null values in objects,
+if shouldRemoveNestedNulls is true and returns the object.
 
 **Kind**: global function  
 **Returns**: The value without null values and a boolean "wasRemoved", which indicates if the key got removed completely