Added an API retrieving fields of a virtual corpus.

Change-Id: I577e29bae1b3112ccb16a2d6b2c65d06695198c0
diff --git a/full/Changes b/full/Changes
index d84e29a..c32a2f7 100644
--- a/full/Changes
+++ b/full/Changes
@@ -20,6 +20,8 @@
  - Updated tests.
 2022-01-25
  - Added show-tokens option to the search API.
+2022-01-31
+ - Added an API retrieving fields of a virtual corpus.
 
 # version 0.64.1