notes

Release-Notes.md

@@ -24,6 +24,39 @@ to this:
     if _debug: _log.debug("    - this_device: %r", this_device)
 ```
 
+### Device Information Cache
+
+The expectations of the DeviceInfoCache have changed to make it closer to what
+would be expected if it had a database backend.
+
+* the `get_device_info()` function no longer returns a mocked up DeviceInfo
+  record if one doesn't exist
+
+* there are new `acquire()` and `release()` functions that signal when a
+  DeviceInfo record is being used by a state machine.
+
+* a new `device_info_class` parameter is used when constructing new DeviceInfo
+  objects so both the DeviceInfoCache and DeviceInfo can be subclassed.
+
+### Segmented APDUs
+
+The segmentation state machine classes have been significantly worked over to
+respect the APCI header fields and is no longer as tightly dependant on the
+device information cache.
+
+### APDU Retry Count Fixed
+
+The retry count is now correct, it was a vicious off-by-one error.
+
+### Foreign Device Communications
+
+The restrictions on what can be sent and received by an unregistered foreign
+device have been relaxed.
+
+### Unrecognized Services
+
+The recept of a request for an unrecognized service is now rejected.
+
 ## 0.17.0
 
 This release contains a number of new features that will break existing code.