Features

• Support large language model based ranker (#1129).
• Support RecFlow without ranker node (#1148).
• Support external recommender in RecFlow (#1146).
• Support start master without config file (#1150).
• Add Azure Blob Storage support (#1152).

Fix

• Delete stale recommendations from cache before setting new ones (#1145).

BREAK CHANGES

• Type of collaborative filtering is required.

[recommend.collaborative]

# The type of collaborative filtering. Supported values:
#   none: disable collaborative filtering.
#   mf: matrix factorization.
type = "mf"