3.0 Deprecations and removals

[dmethvin]

I'll list them all here including ones we've already completed or may not need to address, just to make sure none slip through the cracks. Per https://jquery.com/upgrade-guide/3.0/ we have these:

Deprecated

• [x] jQuery.fx.interval (PR #969)
• [x] .toggleClass() and .toggleClass(Boolean)
• [x] jQuery.unique renamed to jQuery.uniqueSort
• [x] jQuery.parseJSON
• [x] .ready() signatures other than jQuery( fn )
• [x] easing parameters (issue #766)
• [x] .bind() and .delegate() (PR #948)
• [ ] jQuery.expr[":"] and jQuery.expr.filters (issue #1224)

Removed

• [x] jQuery().context and .selector (needs change to text, see #1030)
• [x] .andSelf()
• [x] jqXHR.success, .error, and .complete (there's proper text at https://api.jquery.com/jQuery.ajax/#jqXHR)
• [x] ~~$(document).on("ready", fn) (never documented?)~~
• [x] .load(), .unload(), and .error() (tweaked in #1223 to separate event descriptions from shorthand pages)
• [x] ~~event.pageX and event.pageY normalization (not sure we need changes)~~

Features

• [x] jQuery.escapeSelector
• [x] jQuery.ready promise-consumable (issue #205, PR #983 (was: #530))
• [ ] jQuery.Deferred Promises/A+ compat
• [ ] jQuery.when() consumes thenables (issue #921)
• [ ] .animate() uses requestAnimationFrame
• [x] settings argument signature for jQuery.get() and .post() (showing 1.12?)
• [x] SVG support for .addClass(), .removeClass(), and .toggleClass() (showing 1.12?)