v0.6.0

SQL

• Added support for IS and IS NOT #75
• Added support for IN and NOT IN #76 #81
• Added support for UPDATE ... UNSET #68
• Added support for field constraints for missing types #85
• Added support for EXPLAIN #102

Core

• Added support for Cursors to Engines #40
• Added query planner #88

Bug fixes

• Fix null to text conversion #66
• Make UPDATE ... SET set a field to every matching document #82
• Fix panic when ORDER BY is used with an indexed field #71
• Fix DROP TABLE behavior that used to remove all database indexes #99
• Normalize behavior of boolean field constraint with incompatible types #89