Changed time interval to be inclusive on both sides (#207)

Fixes #205

Author: Marenz

RELEASE_NOTES.md

@@ -7,6 +7,7 @@ This update focuses on pagination.
 ## Upgrading
 
 * Updated to the latest common-api which provides slighlty modified pagination messages.
+* The `TimeIntervalFilter` is now inclusive on both ends.
 
 ## New Features
 

proto/frequenz/api/dispatch/v1/dispatch.proto

@@ -206,7 +206,7 @@ message TimeIntervalFilter {
   // Filter by time >= this timestamp.
   google.protobuf.Timestamp from = 1;
 
-  // Filter by time < this timestamp.
+  // Filter by time <= this timestamp.
   google.protobuf.Timestamp to = 2;
 }