Added fest:value output="json"
Merge pull request #74 from bruderschaft/issue-68

Added fest:value output="json" (Fixes #68)
changed console.log on the console.error
Merge pull request #76 from bruderschaft/issue-70_1

changed console.log on the console.error
fixed compile error because of ";"
the second change of regExp
Merge pull request #79 from bruderschaft/issue-66_1

Fix #66
Updated changelog for 0.7.3