Merge pull request hashtopolis#8 from s3inlc/current-dev

Including changes for next release

set for 0.5.0 release

fixed arguments for token failing functions

prepare for 0.3.0 release

fixed issue when file task is deleted during execution

prepared for release

updated changelog

version 0.1.6 preparement

prepared for version 0.1.5

release 0.1.4