* fixed#1172
Collection variable added to folder environment
* modified code implementation #1172
* refactored code
* feature implemented #754
Code implemented to show the sorce of variable
* #1155 fixed
* code restructuring
* fixed#773
Added hotkey alt+u which swaps variable name with value and vice versa.
* Added support for async importers
* Swagger importer v0.1 - supports import of workspace, environment and endpoints from swagger 2.0 specifications. Supports query params, headers and body. Mocks body of application/json endpoitns
* Refactor: added comments, removed function-in-function declarations
* Fixed import of yaml files. Added tests for both .json and .yaml