Minor changes

Updated Guzzle request queries
Changed argument validation method
Optional parameter to get full Guzzle response

Fixes and additional methods

Added methods for time-entries

find() - single time entry
edit()
delete()

Get project tasks

v1.1.3

Added get all tasks for specific project

guzzle 6 support

v1.1.2

Guzzle 6 support

Guzzle 6.0

v1.1.1

Updated package name and guzzle version