v0.3.0

From CHANGELOG.md:

Added

• New composite action space for pe1 environments that allows you to define the reference frame in which the burn is to be interpretted. The composite action space uses dictionaries as actions with two fields "burn_vec" and "ref_frame". burn_vec is the same format as the old action space (Box action space). ref_frame is an integer (Discrete action space). Backward compatibility with old action space has been maintained. If a list-like object is passed in, it will treat it as the old action space, otherwise a dict with appropriate fields must be passed
• Addtional test_pe1_e1_i3.py tests for reference frames
• Example agent using new action space and NTW reference frame. See ProgradePursuitAgent in agent_api/example_agent.py

Changed

• Abstracted convert_rhntw_to_rhpbody and convert_rhcbci_to_rhpbody to parent level functions requiring as input the vessel object for which conversion to right-hand body coords is to be performed
• Abstracted _start_bot_threads() and close() to KSPDGBaseEnv to reduce redundancy
• Abstracted the step function from pe1, lbg1, and sb1 environments up to KSPDGBaseEnv under the step_v1 function

Removed

• Commented code in lbg1_base.py, observation_dict_to_list and observation_list_to_dict

Full Changelog: v0.2.0...v0.3.0