change package name to verse

demo/vehicle/demo8.py

demo/vehicle/demo_opendrive.py

setup.py

tests/testdpp.py

verse/__init__.py

verse/agents/__init__.py

verse/agents/base_agent.py

verse/analysis/__init__.py

verse/analysis/analysis_tree.py

verse/analysis/simulator.py

verse/analysis/verifier.py

verse/automaton/__init__.py

verse/automaton/guard.py

verse/automaton/hybrid_automaton.py

verse/automaton/hybrid_io_automaton.py

verse/automaton/reset.py

verse/code_parser/__init__.py

verse/code_parser/astunparser.py

verse/code_parser/parser.py

verse/example/__init__.py