[maven-release-plugin] prepare release clojure-maven-plugin-1.3.21
[maven-release-plugin] prepare for next development iteration
Merge branch 'release/1.3.21'

* release/1.3.21:
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release clojure-maven-plugin-1.3.21
  Refactored to reuse classpath check for normal test goal as well.
  don't throw an exception if the test script path is a classpath resource (indicated by starting with @)
  Updated deps
Merge tag '1.3.21' into develop

Rel

* tag '1.3.21':
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release clojure-maven-plugin-1.3.21