Prepare release notes for v1.0.0-rc1400 (#1121)

Author: llucax

RELEASE_NOTES.md

@@ -2,24 +2,16 @@
 
 ## Summary
 
-<!-- Here goes a general summary of what this release is about -->
+This is a minor release with just a few bug fixes but also one breaking change in the `ConfigManagingActor`.
 
 ## Upgrading
 
 - The `ConfigManagingActor` now only reacts to `CREATE` and `MODIFY` events. `DELETE` is not supported anymore and are ignored.
 - Remove the `event_types` argument from the `ConfigManagingActor` constructor.
 
-## New Features
-
-* Many tasks, senders and receivers now have proper names for easier debugging.
-* The resample log was improved to show more details.
-* The `Sample` class now has a nice `__str__` representation.
-
 ## Bug Fixes
 
-- Fix a bug in the resampler that could end up with an *IndexError: list index out of range* exception when a new resampler was added while awaiting the existing resampler to finish resampling.
-
 - Fix bugs with `ConfigManagingActor`:
   - Raising unhandled exceptions when any file in config directory was deleted.
   - Raising unhandled exception if not all config files exist.
-  - Eliminate recursive actor crashes when all config files were missing.
+  - Eliminate recursive actor crashes when all config files were missing.