Release v0.13.0-rc.15

New features

• hygienic errors for strings in path segements
• axiom stdlib module
• gcl now supports the timestamp metadata overwrite
• basic avro codec

Fixes

• Fix bug in GBQ connector where batches were not sent

Breaking Changes

• All google connectors now require token to be either set to {"file": "<path to json>"} or {"json": {...}}