Inability to fetch "all" incidents, only 50 (#565)

As far as I can tell, as of latest commit, d87b394 of sentinel_core.py, only 50 incidents are returned. 

The current implementation does not seem to respect the `nextLink` returned by the API and thus does not seem to paginate over incidents. 

Perhaps an issue in the msticpy repo would be better suited for this report.

docs/source/data_acquisition/SentinelIncidents.rst

@@ -4,7 +4,7 @@ Microsoft Sentinel Incidents
 List Incidents
 --------------
 
-It is possible to return a list of all incidents within a workspace, as well as get the details of a specific incident.
+It is possible to return a list incidents within a workspace, as well as get the details of a specific incident.
 Whilst it is possible to access these incident details via the Incident table in the Workspace, you can also interact
 with them via the Microsoft Sentinel APIs which are utilized in these functions.
 
@@ -14,7 +14,7 @@ See :py:meth:`get_incidents <msticpy.context.azure_sentinel.MicrosoftSentinel.li
 
     azs.list_incidents()
 
-This returns a DataFrame with details of all incidents.
+This returns a DataFrame with details of incidents.
 
 To get details of a single incident you can call `.get_incident` and pass the ID of an incident.
 This ID can be found in the name column of the DataFrame returned by `.get_incidents` and appears in the form of a GUID.
@@ -99,4 +99,4 @@ See :py:meth:`create_incident <msticpy.context.azure.sentinel_core.MicrosoftSent
 
     azs.create_incident(title="A custom incident", severity="High"
 
-)
+)