0.3.1

Fjall

• Fix: take sealed memtable sizes into account on recovery
• Increase default max journal size to 512 MiB
• Add Keyspace::write_buffer_size
• Refactor keyspace recovery
• Refactor write buffer management
• Relaxed write stall/halt thresholds a bit (increased by 4 segments)

lsm-tree

• Add BlockCache::capacity
• Change default target size of levelled compaction to 64 MiB