Update README.md

Author: davenquinn

README.md

@@ -91,7 +91,7 @@ To build (and continuously watch) the frontend, run `make dev`.
 A backend API server will be started and proxied, so you don't have to run
 `corelle serve`.
 
-### Testing the system
+### Testing
 
 Corelle contains an extensive set of conformance tests to ensure that it has
 GPlates-compatible rotation handling, and to ensure that rotation APIs perform
@@ -111,8 +111,8 @@ for auto-rebuilding.
 ## Todo
 
 - [x] Fix subtle math bugs!
-- [ ] On-database cache of rotations (say, at 1 Ma increments?)
-- [ ] Return pre-rotated feature datasets (rather than just modern versions)
+- [x] On-database cache of rotations (say, at 1 Ma increments?)
+- [x] Return pre-rotated feature datasets (rather than just modern versions)
 - [x] Materialized view for split feature datasets
 - [x] Allow feature datasets to be listed
 - [x] Create a dockerized version