0.7.0 - replication, fuzzy canon, filter plugins and more

Big new features contributed by James Kafader and Noah Levitt from the Archive-It team at the Internet Archive:

• Replication
• Fuzzy canonicalization using pywb-style rules.yaml
• Request logging
• RocksDB upgraded to 6.0.1
• Command line options for tweaking performance
• Filter plugins
• New query params
  • urlkey - alternative to url, bypasses outbackcdx canonicalization
  • from - minimum timestamp
  • to - maximum timestamp
  • collapse aka collapseToFirst
  • collapseToLast