v0.2-alpha-20211024

• Fix typos preventing rounds of combat with somebody who has dodge skill (making it inadvertently too effective!)
• Prevent a panic case around a possible nil pointer when removing self from a group
• Add Sentry SDK for Go for reporting panic details; set context on player input with character/room/input
• Unset casting on death, set mana and stamina to 1
• Fix oversight where on session resume, the existing character's client pointer was being immediately hijacked by the connecting user (thanks, Tnega!)
• Add purposefully vague location to the who command
• Add health feedback when looking at a creature