2.0.0

MultiScanner 2.0 includes a large refactor of the code base to better support Python packaging and imports.

Other changes include:

• migration to ElasticSearch 6 for distributed mode
• multiselect file download
• API /storage stability improvements (#74)
• add tags at upload (#122)
• add module for Endgame's Ember benchmark model
• updates to docker image
• several bug fixes.