Developer Preview 1b

Fix potential issue on Windows removing files.

Developer Preview 1a

Minor update, adjusting our go.mod to point to released versions.

Developer Preview 1

Initial Release

Major Changes from Bleve:

• Removed IndexMapping
• Moved query string to separate module
• Removed JSON marshaling/unmarshaling
• Removed HTTP handlers
• Removed registry
• Removed array positions
• Removed internal key/value storage
• Reorganized into fewer, larger packages
• Strongly typed configuration
• Static analysis via golangci-lint
• New directory abstraction
• Support for multi-process access to indexes (read-only)
• Support online backup
• Scoring via BM25 similarity model
• Ability to customize scoring
• Search, sort and aggregate over virtual fields
• Completely overhauled aggregation framework