Update version number in more places

Author: nomeata

Building.md

@@ -38,7 +38,8 @@ If you have any problems, you can [report an issue via GitHub](https://github.co
 Making a release
 ----------------
 
-1. Ensure that the version number in `tttool.cabal` is up-to-date
+1. Ensure that the version number is up-to-date in:
+   `Changelog.md`, `tttool.cabal`, `book/conf.py`, `nix/tttool.nix`
 2. Run
 
        nix-build nix -A release-zip

book/conf.py

@@ -15,7 +15,7 @@
 copyright = u'2019, Joachim Breitner'
 author = u'Joachim Breitner'
 
-version = u'1.8.1'
+version = u'1.9'
 release = version
 
 language = 'de'

nix/tttool.nix

@@ -14,7 +14,7 @@
     flags = {};
     package = {
       specVersion = "1.10";
-      identifier = { name = "tttool"; version = "1.8.1"; };
+      identifier = { name = "tttool"; version = "1.9"; };
       license = "MIT";
       copyright = "2013-2019 Joachim Breitner";
       maintainer = "[email protected]";