Prepare new release.

Bump version number, update NEWS file.

NEWS

@@ -1,3 +1,12 @@
+Changes in scorepw 0.2.1 (2018-04-15)
+-------------------------------------
+
+    * Fix incorrect handling of -D option.
+    * Fix compile-time error when only one backend is available.
+    * Add configure options --with-{zxcvbn-c,zxcvbn-cpp,pwquality}
+      to allow disabling an estimator backend at configure time.
+
+
 Changes in scorepw 0.2.0 (2018-01-14)
 -------------------------------------
 

configure.ac

@@ -1,6 +1,6 @@
 dnl Configure template for the scorepw package
 
-AC_INIT([scorepw], [0.2.0], [devel@incenp.org])
+AC_INIT([scorepw], [0.2.1], [devel@incenp.org])
 AC_CONFIG_SRCDIR([configure.ac])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR([config])