Mapillary-tools

Features and improvements
* mapillary_tools available to be downloaded and installed as a package

Features and improvements
* Enable specification of a time offset in case of already geotagged images
* Add better progress bars and information output in process
* Support Blackvue videos with embedded gps data
* Add a simple `download` command to download all the blurred imaged from Mapillary for a certain `import_path`
* Support import of multiple videos

Breaking changes
* Argument `--video_file` was renamed to `--video_import_path` as directories of one or more videos can now be processed and uploaded. Note that even if one video is to be processed and uploaded, the directory of the video should be specified as the video import path and not the video file itself.
* Only the Image Description EXIF tag is overwritten with the mapillary image description which includes all the data obtained during the `process` command. If one would like the rest of the tags to be overwritten, an additional argument needs to be passed under advanced usage. Single specific tags can also be overwritten by additional specific corresponding arguments.

Features and improvements
* Additional information and progress bars under verbose in process,
* Partial optimization in DONE file sending,
* Post process command covering process summary, list of image status and options to move image according to status
* Extend support in csv processing
* Adding number of threads and max attempts in upload as command line arguments

Bug fixes
* Correct the last interpolated direction

Bug fixes
* Fix bug that resulted in sub seconds added twice in case subseconds were written to capture time tag as well as sub second time tag.

Features and improvements
* Sample video frames into a made up sub directory `.mapillary/sampled_video_frames/"video filename"`, either where the video is located or in the import path if it is specified.
* Add command line arguments for `user_name`, `user_email` and `user_password` for `authenticate` command, in order to avoid the prompt.

Bug fixes
* Do not delete the import path in case it is specified as an import path for video files to be sampled into and that particular video file was already sampled into that import path, but rather issue a warning that user needs to delete existing frames that were sampled in any previous runs