Here's staging repository for java 8 compatible driver:
https://oss.sonatype.org/content/repositories/orgpostgresql-1084/
It is build from https://github.com/pgjdbc/pgjdbc/tree/REL9.4.1207
I'll gather jars for jre6 and jre7 together tomorrow and if that
works, I'll merge that in.
What I do not like is that build via java7 fails at random:
https://travis-ci.org/pgjdbc/pgjdbc/builds/97856702,
https://travis-ci.org/pgjdbc/pgjdbc/builds/97856670.
Vladimir