Worked on the pause/resume functionality: https://github.com/wluu/LogJiraWork/issues/1

Here are the tested scenarios:

* start<sub>1</sub>, stop<sub>1</sub> --> (stop<sub>1</sub> - start<sub>1</sub>) ms
* start<sub>1</sub>, pause<sub>1</sub>, stop<sub>2</sub> --> (pause<sub>1</sub> - start<sub>1</sub>) ms
* start<sub>1</sub>, pause<sub>1</sub>, resume<sub>2</sub>, pause<sub>2</sub>, stop<sub>3</sub> --> (pause<sub>1</sub> - start<sub>1</sub>) + (pause<sub>2</sub> - resume<sub>2</sub>) ms
* start<sub>1</sub>, pause<sub>1</sub>, resume<sub>2</sub>, stop<sub>2</sub> --> (pause<sub>1</sub> - start<sub>1</sub>) + (stop<sub>2</sub> - resume<sub>1</sub>) ms
* pause --> error message
* resume --> error message