Dgraph v0.7.1 release

Features

• Support @reverse for automatically adding reverse edges.
• Support for taking snapshots using RAFT.
• Support for sorting results in descending order.
• Support less than equal (leq) and greater than equal (geq) functions in filtering.
• Support for Geo functions (near, contains, within, intersects).

Improvements

• Switch dgraphloader to use the Go client.
• Move Go client to within the Dgraph repo with support for BatchWrite's.
• Support for reading flags from YAML config file.
• Allow empty strings in mutations.
• Introduce uid type for objects in schema.
• Remove query expansion based on schema.

Bug Fixes:

• Don’t return empty objects at root.
• Getting count with both order and filter applied.
• Minor bugfixes in GQL parser.
• Fix bugs in field alias.
• Return errors on using unindexed fields in query functions.