maint: post-release administrivia

* NEWS: Add header line for next release.
* .prev-version: Record previous version.
* cfg.mk (old_NEWS_hash): Auto-update.

3 files changed, 5 insertions, 2 deletions

diff --git a/.prev-version b/.prev-version
index 7dba3a2d..410158ac 100644
--- a/.prev-version
+++ b/.prev-version
@@ -1 +1 @@
-2.27
+2.28
diff --git a/NEWS b/NEWS
index f31dda08..53ba76e1 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,8 @@
 GNU grep NEWS                                    -*- outline -*-
 
+* Noteworthy changes in release ?.? (????-??-??) [?]
+
+
 * Noteworthy changes in release 2.28 (2017-02-06) [stable]
 
 ** Bug fixes
diff --git a/cfg.mk b/cfg.mk
index f4eead73..84412038 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -60,7 +60,7 @@ export VERBOSE = yes
 # 1127556 9e
 export XZ_OPT = -6e
 
-old_NEWS_hash = d4a1c9c6c0b35de3b2c86b8f7d35b43e
+old_NEWS_hash = 80a4ad23530a69afb0f6d27cb39b5ff5
 
 # Many m4 macros names once began with 'jm_'.
 # Make sure that none are inadvertently reintroduced.