Resetting limits if needed

[maxspahn]

Currently the joint position/velocity/acceleration limits are hard coded. We should add a setter method to modify it according to the need of an application.

[SkyloveQiu]

For this part, should I create a function with args?

[maxspahn]

If you want to address this issue, I suggest to first address it in the planar environments, see https://github.com/maxspahn/gym_envs_planar
There is already an implementation for the point robot, see https://github.com/maxspahn/gym_envs_planar/blob/354288a67b7185843dcb2c917ade86974ac18607/planarenvs/point_robot/envs/point_robot_env.py#L44-L64

For this part, should I create a function with args?

Correct, a function called reset_limits for example in which you can change individual limits if needed.