v0.1.0

Update 0.1.0

• Changed the name from SimPIL to uSimPIL (I just noticed that the name was already used on PyPi... ;-;)
• Added a method and a Circle class allowing for the moment to round the corners of an image in order to make a circle
• Added a merge function allowing you to merge an image (PIL or uSimPIL) with an item (Circle, Corners...)
• Modification of the global structure with the addition of OperationsSystem representing the items (Circle, Corners...) which can be used via the merge function
• Changed SquareCornersOperation used via square, now uses RoundCornersOperation
• Added a new function which allows you to create a new image from scratch