• Added <hx-partial> tag support, backported from 4.0: a response can carry <hx-partial hx-target="..."> elements that swap into their own targets (thanks @MichaelWest22)
• Fixed hx-push-url="false" on an ancestor of a boosted element being ignored Issue 3966 (thanks @MichaelWest22)
• Fixed hasHeader() substring match on response header names, which could throw a TypeError Issue 527 (thanks @manwithacat)
• Fixed OOB swap targets not found when the context element is detached from the document Issue 3959 (thanks @yfwmaniish)
• Updated internal object iteration to use Object.keys() instead of for...in (thanks @yawaramin)
• Fixed @default JSDoc value for selfRequestsOnly (thanks @blister)