Merge tag '1.3.19' into develop

Rel

* tag '1.3.19':
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release clojure-maven-plugin-1.3.19
prevent NPE when there are no Clojure tests present
Updated dependencies.
[maven-release-plugin] prepare release clojure-maven-plugin-1.3.20
[maven-release-plugin] prepare for next development iteration
Merge branch 'release/1.3.20'

* release/1.3.20:
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release clojure-maven-plugin-1.3.20
  Updated dependencies.
  prevent NPE when there are no Clojure tests present