Objects not grouped by transform methods

When performing the integration tests #24 (closed) via the creation of example files, I have realized that the method rotate() of the class Transform does not group the resulting objects when demanded to do so.

After checking the code, I have noticed that several of the methods in this class have a hardcoded statement

.GroupObjects "False"

instead of using the value of their input parameter called group.

The affected methods are:

• scale()
• rotate()
• mirror()