Release v0.1.19

v0.1.19

• Debug API endpoint (#23) [x]
• Implement logging [x]
  • Implement Workflow logging [x]
• Debug Workflow Steps [x]
• Remove workflow main methods [x]
  • Workflows must now be called only from the CLI [x]
• Implement post-workflow actions [x]
  • Update db [x]
  • Upload to ProvStore [x]
  • Write PROVN [x]
  • Write PDF [x]
• Add Sample.auto_update_db() methods [x]
• Remove logger call when updating Project in database [x]