add UPGRADING note

diff --git a/UPGRADING b/UPGRADING
index 9faa926f91147dfde5caef17fe45ddaa26b40932..a77af84df3e70617833f457fa43c4926dda41b6e 100644 (file)
--- a/UPGRADING
+++ b/UPGRADING
@@ -102,6 +102,9 @@ PHP 7.2 UPGRADE NOTES
   . A trailing comma in group use statements is now allowed.
     (https://wiki.php.net/rfc/list-syntax-trailing-commas)
 
+- DBA:
+  . Implemented support for the LMDB backend.
+
 - PCRE:
   . Added `J` modifier for setting PCRE_DUPNAMES.
   . Added `PREG_UNMATCHED_AS_NULL` flag to allow distinguish between unmatched