v1.3.11
* Added `file_lock_fail_fast` iwkv open option.
If `true` - do not wait and raise error if database is locked by another process
* Fixed meaningful PVP studio errors:
- kv/iwkv.c:593:1: error: V774
- kv/iwkv.c:1375:1: warning: V649
- kv/iwkv.c:3357:1: warning: V581
- utils/iwxstr.c:59:1: warning: V701