doc: relnotes: note some recent improvements

diff --git a/Documentation/RelNotes/v1.7.0.wip b/Documentation/RelNotes/v1.7.0.wip
index f71f447feb4d44cd1d4388ac9bc641ac272ca173..854c2fce7c885ac019ac11f467f7c946c2d3598c 100644 (file)
--- a/Documentation/RelNotes/v1.7.0.wip
+++ b/Documentation/RelNotes/v1.7.0.wip
@@ -8,7 +8,11 @@ Another big release focused on multi-inbox search and scalability.
 
 * general changes
 
-  config file parsing is 2x faster with 50K inboxes
+  - config file parsing is 2x faster with 50K inboxes
+
+  - deduplication ignores whitespace differences within address fields
+
+  - "PRAGMA optimize" is now issued on commits for SQLite 3.18+
 
 * read-only public-inbox-daemon (-httpd, -nntpd, -imapd):
 
@@ -47,6 +51,14 @@ Another big release focused on multi-inbox search and scalability.
   filesystem or over HTTP(S).  See lei(1), lei-overview(7), and other
   lei-* manpages for details.
 
+* public-inbox-index
+
+  - non-strict (Subject-based) threading supports non-ASCII characters,
+    reindexing is necessary for old messages with non-ASCII subjects.
+
+  - --batch-size is now 8M on 64-bit systems for throughput improvements,
+    higher values are still advised for more powerful hardware.
+
 * public-inbox-watch
 
   - IMAP and NNTP code shared with lei, fixing an off-by-one error