Update TODO

Author: TravisCardwell

project/TODO.md

@@ -6,6 +6,9 @@
 
 ## Compatibility
 
+* [`optparse-applicative`](https://hackage.haskell.org/package/optparse-applicative)
+  `0.19.0.0` blocked by
+  [`ginger`](https://hackage.haskell.org/package/ginger)
 * Test boot library
   [`process-1.6.26.0`](https://hackage.haskell.org/package/process-1.6.26.0):
   waiting for use in GHC release