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 4caecc7..b3d791d 100644
--- a/.prev-version
+++ b/.prev-version
@@ -1 +1 @@
-4.5
+4.6
diff --git a/NEWS b/NEWS
index 125293c..7bc203e 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,8 @@
 GNU sed NEWS                                    -*- outline -*-
 
+* Noteworthy changes in release ?.? (????-??-??) [?]
+
+
 * Noteworthy changes in release 4.6 (2018-12-19) [stable]
 
 ** Improvements
diff --git a/cfg.mk b/cfg.mk
index ab0c95b..05384b7 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -71,7 +71,7 @@ export VERBOSE = yes
 # 836832 6e
 export XZ_OPT = -6e
 
-old_NEWS_hash = 3f590fab578ab7756a49f98c25767fe4
+old_NEWS_hash = 297b802a5b52cec8715863dbd1b9e643
 
 # Many m4 macros names once began with 'jm_'.
 # Make sure that none are inadvertently reintroduced.