Gorse v0.4.1

Features

• Support session-based recommendation (#430).
• Invalidate cache after the configuration change (#436).
• Support cache garbage collection (#437).
• Export metrics for new Gorse Grafana dashboard (#445).

Fix

• Fix hidden items and deleted items visibility (#442).

Performance

• Cache popular items in the server node (#438).
• Cache hidden items in the server node (#439).