Release nexus-actor-utils-rs-v0.1.2

Bug Fixes

• Change Mutex to RwLock (5a09afb)

Styles

• fix whitespace formatting in priority_queue.rs (4a871f9)

Code Refactoring

• change remove_process method to async in ProcessRegistry (06aa58d)
• update ring queue methods to access inner struct (80f075b)
• simplify imports in priority_queue.rs (daf60f3)