v0.21.0

Known bugs

• #886

Added

• Added json_unquote function.
• Added commit_file_stats function.
• Added documentation about commit_stats.
• Add metrics (engine, analyzer, regex, pilosa) based on go-kit interface. (#744)
• commit_files is now squashable with blobs.
• Moved to Go modules.
• Add COMMIT_STATS function
• sql: implement EXPLODE and generators (#720)

Changed

• Removed vendor folder.
• Upgrade enry to version v2.0.0.
• Switch gocloc to version v0.3.0.
• Upgrade vitess to v1.8.0 (#738)
• Upgrade bblfsh to v4.1.0.
• Upgrade gocloc to latest master 764f3f6ae21e.

Fixed

• bblfsh aliases are now handled correctly (#728).
• sql: correctly handle nulls in SQL type conversion (#753)
• sql/parse: error for unsupported distinct on aggregations (#869)
• internal/function: gracefully handle errors in commit_stats.
• internal/function: take into account if repository is resolved in commit_stats (#863)
• internal/function: Files field in commit_stats contains now proper results.
• Fix parsing of quoted identifiers in SHOW CREATE TABLE queries (#737)
• sql/analyzer: back-propagate expression names after adding convert (#739)
• sql/expression: allow null literals in case branches (#741)
• sql/plan: make LEFT and RIGHT join work as expected (#743)