.from_idtrackerai fails when "setup_points" value is None

[DeanTM]

For some reason traj_dict["setup_points"] can be None, so that the first if-clause passes but the second raises an error.

trajectorytools/trajectorytools/trajectories.py

Line 47 in 7640b6e

if "setup_points" in traj_dict and "border" in traj_dict["setup_points"]:

Perhaps defining traj_dict["setup_points"] = {} earlier in the code, or deleting traj_dict["setup_points"] if it's value is None, would avoid this problem.

[fjhheras]

Solved with pull request #40