ClientStorage

item overstacking

• MERGE_PER_CONTAINER => items of same type, located in same containers will be merged "over 64"

• MERGE_ALL => merge all items of same type, even if not in same container

• SEPARATE_ALL => show each stack separately (as it was till now)

• note: if you have any rendering experience, I'd be glad if you could PR a smaller font rendering for overstacked values :wink:

more config options

• control over server config sync
• item location tooltip -> you can make it require shift / control or alt to be shown

fix some singleplayer issues (#6)