Consolidate French CTC into single fr-ctc addon

CHANGELOG.md

@@ -30,6 +30,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 ### Added
 
+- `addons/fr/ctc`: consolidated French CTC support. invoice rule sets are dispatched at validation time, and Flow 6 lifecycle messages (`bill.Status`) run unconditionally. `eu-en16931-v2017` is no longer a hard `Requires`.
 - `currency`: new `CanConvertTo` test that will ensure a document has or can convert to the provided currency.
 - `addons/es/verifactu`: Country is now required on customer identities when the identity type is not NIF-VAT (02).
 - `cbc`: `Meta.Keys()`, `Meta.Values()`, and `Meta.All()` (iter.Seq2) for ordered iteration over meta entries.