v2.5.0

Commit	Message/Description
b812e54	v2.5.0
050260e	Merge pull request #70 from kadamwhite/show-help-if-no-arguments-provided
e53d50e	Merge pull request #68 from rwaldron/fix-printVersion
31fe670	Merge pull request #72 from hax/patch-1
92d75e6	Merge pull request #75 from jugglinmike/expected-error
88a798a	Correct interpretation of negative metadata
5e2e297	fix regexp instance!
d1ec287	Show --help when CLI is called with no arguments
dc13e01	Fixes for printVersion. See detail