add reasonable toString for DbJoin

[maven-release-plugin] prepare for next development iteration

[maven-release-plugin] prepare release sqlbuilder-3.0.3

add a variety of helpers for schemas; add CURRENT_TIMESTAMP

update parent pom dep

update sql syntax types

[maven-release-plugin] prepare for next development iteration

[maven-release-plugin] prepare release sqlbuilder-3.0.2

prep for release

Add convenience methods for constructing OrderObject instances. Add documention about using OrderObject to control null ordering.

add faq entry for ctes

add download link

upgrade junit

Add system property which allows setting the default list item separator to include a trailing space

minor code cleanups