Checking in changes prior to tagging of version 0.1.1.

Changelog diff is:

diff --git a/History.md b/History.md
index 166b832..7a22090 100644
--- a/History.md
+++ b/History.md
@@ -1,3 +1,6 @@
+0.1.1 / 2013-12-18
+  * update plv8x so --client is more reentrant-safe
+
 0.1.0 / 2013-12-1
   * plugin infrastructure
   * support l=-1 for unlimited entries