Use tagged versions for dependencies where possible

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/tchap/go-patricia/README.md

@@ -1,6 +1,8 @@
 # go-patricia #
 
 **Documentation**: [GoDoc](http://godoc.org/github.com/tchap/go-patricia/patricia)<br />
+**Build Status**: [![Build
+Status](https://drone.io/github.com/tchap/go-patricia/status.png)](https://drone.io/github.com/tchap/go-patricia/latest)<br />
 **Test Coverage**: [![Coverage
 Status](https://coveralls.io/repos/tchap/go-patricia/badge.png)](https://coveralls.io/r/tchap/go-patricia)
 
@@ -115,3 +117,7 @@ MIT, check the `LICENSE` file.
 [![Gittip
 Badge](http://img.shields.io/gittip/alanhamlett.png)](https://www.gittip.com/tchap/
 "Gittip Badge")
+
+[![Bitdeli
+Badge](https://d2weczhvl823v0.cloudfront.net/tchap/go-patricia/trend.png)](https://bitdeli.com/free
+"Bitdeli Badge")