Version 0.3.0

Changed

• Breaking - Renamed new() to guard() for empty guard constructors:
  • NoDropEmpty::new() → NoDropEmpty::guard()
  • NoDropNoOpEmpty::new() → NoDropNoOpEmpty::guard()
• Breaking - Renamed marker types and traits:
  • PassMarker trait renamed to MsgMarker
  • Empty marker type renamed to NoMsg
• Breaking - Replaced DEFAULT_DROP_PANIC_MSG module constant with type-associated constants
  • Removed public DEFAULT_DROP_PANIC_MSG export from dbg and rls modules
  • Added PANIC_MSG as a public associated constant on Empty variant types:
    • NoDrop::PANIC_MSG
    • DropGuardEmpty::PANIC_MSG
  • Added PANIC_MSG as a public associated constant on Message variant types:
    • NoDropMsg::PANIC_MSG
    • DropGuardMsg::PANIC_MSG
• Specified MSRV as 1.85.1
• Made the following methods const:
  • DropGuardEmpty: guard(), wrap(), armed(), disarmed()
  • DropGuardMsg: guard(), wrap(), armed(), disarmed()
  • DropGuardPass: guard(), wrap(), armed(), disarmed()

Fixed

• Fixed DropGuardMsg::disarm() where calling disarm() on an already-disarmed guard would lose the panic message. The message is now properly preserved across all state transitions.
• Fixed compilation error where dbg::NoDrop was unavailable in release mode

Added

• Added GuardState enum to represent armed/disarmed state
• Added toggle() method to all drop guard types (returns GuardState indicating new state):
  • DropGuardMsg::toggle() - Toggles between armed and disarmed states
  • DropGuardEmpty::toggle() - Toggles between armed and disarmed states
  • DropGuardNoOp::toggle() - Toggles between armed and disarmed states
• Added DropGuardMsg::set_msg() method to change the panic message while preserving the armed/disarmed state
• Added verification benchmarks.