v0.6.0

Major changes:

• Upgrade to Python3 and drop the support for Python 2 #377

Fixes:

• Fix the --save_local_mapping support #334
• Fix the stream_id in gpx_from_gopro.py #356

Breaking changes:

• Remove option --api_version
• Remove the standalone script bin/download_images.py

Binary is available for download below:

• For windows: download mapillary_tools.exe
• For macOS: download mapillary_tools.zip