Add a very basic inventory panel

Add a very basic inventory panel to the game opened by pressing `i`,
which displays the contents of the player's inventory in a basic list.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/Xanthous/Game/Lenses.hs b/src/Xanthous/Game/Lenses.hs
index 13f4b89314..1f72e08b7b 100644
--- a/src/Xanthous/Game/Lenses.hs
+++ b/src/Xanthous/Game/Lenses.hs
@@ -46,6 +46,7 @@ initialStateFromSeed seed =
       _messageHistory = mempty
       _revealedPositions = mempty
       _promptState = NoPrompt
+      _activePanel = Nothing
       _debugState = DebugState
         { _allRevealed = False
         }