v5.0.0

• Convert to typescript
• Test with node.js 20.x
• Replace TravisCI with GitHub Actions

v4.0.0

BREAKING

• library now exports two items, Locking and LockingAsync
• Locking function, which contains the same interface as previous versions
• LockingAsync class, for managing async/promise functions of arbitrary parameters
• update lru-cache 7.x, this includes updated options:
  • stale is now allowStale
  • maxAge is now ttl
• use jest as a test runner
• test on node 16 & 18, drop node 10 & 12

v3.3.0

• Made sure to check if data exist before fetching it