* Containers now use a squid proxy for apt/yum to speed builds.
* Obsolete containers are removed by the <br-option>--vm-force</br-option> option.
* Greatly reduced the quantity of Docker containers built by default. Containers are only built for PostgreSQL versions specified in db-minimal and those required to build documentation. Additional containers can be built with --db-version=all or by specifying a version, e.g. --db-version=9.4.
* This will help catch Perl errors in the doc code since it is not run across multiple OSs like the core and test code.
* It is to be hoped that a newer kernel will make Docker more stable.
Perl Critic added and passes on gentle. A policy file has been created with some permanent exceptions and a list of policies to be fixed in approximately the order they should be fixed in.
1) Tests for all operating systems can now be run with a single command.
2) Tests can be run in parallel with --process-max.
3) Container generation now integrated into test.pl
4) Some basic test documentation.
