Merge tag '0.3.1' into develop

0.3.1
rm oni/mechanic
mv to oni/game and oni/utils
add test.sh
add inventory and other
fix logging and others
add data/
rm actor and other small fix
fix
ace templates
fix oni/game and mv avatar_conn.go -> conn.go
fix test in oni/game
fix go vet
add DroppedItem
add inventorymsg
fix oni/game and add moar messages
fix test
fix
fix and add suika.js
fix db and effects/features