
21.4.0
	Date: 25/20/2019
	What's new
		1. (medium): test framework: info messages added on technical error 
		2. (minor): test framework: task duration added in raw event
		3. (minor): some errors messages improved
		4. (minor): new specific python module for variables management
	Issues Fixed
		1. (minor): fix bad json import in 03_Initialize snippet
		2. (minor): fix swagger generation