------------- * fix: license description in setup.py
0.9.19
------------- * change to MIT License
0.9.18
------------- * add ImageWidget and TurtleWidget classes, to embed easygraphics in Qt Applications
0.9.17
------------- easygraphics.turtle:
* add: is_out_of_window() to check if the turtle is out of the graphics window
0.9.16
------------- * redefine pause() in turtle * redefine is_run() in turtle * fix: default turtle speed * change: meaning of the turtle's move_arc() function's parameters * add: move_ellipse() function in easygraphics.turtle package
0.9.15
------------- * fix package error in setup.py * change turtle's default speed to 10