Release v0.9.3

• Update docs and examples (d693691)
• Update config methods (8acdc5c)
• Add verification;clean-up (092ae0e)
• Refactor data() and clean-up (73db518)
• add subset.js; add tests (c0d0fe4)
• Use variables (79fdbba)
• Add var replacement in command (9c12de6)
• remove old pkg code (87a3b67)
• new sscweb metadata (3e6e787)
• Packing (61dceb2)
• Update README.md (53965e9)