Set includeContextSize in kustvakt conf

Resolves #38

Thanks @diewald!
diff --git a/data/kustvakt-lite.conf b/data/kustvakt-lite.conf
index 5f5764b..8cd6682 100644
--- a/data/kustvakt-lite.conf
+++ b/data/kustvakt-lite.conf
@@ -11,6 +11,7 @@
 krill.index.commit.log = log/krill.commit.log
 krill.index.commit.auto = 500
 krill.index.relations.max = 100
+krill.match.expansion.includeContextSize = true
 
 # krill.namedVC=vc