Json expand root

[platypii]

A couple json quality of life improvements:

• Always expand the top-level root node (if I'm looking at data I pretty much never want [] entries: 100
• Cap array and object properties at pageLimit 100 because otherwise this can hang the browser on large arrays
• "Show more..." button for arrays/objects with more than 100 entries
• Convert dates to ISO string not {}
• Bump deps