Update: callback
Update: area
Update: hashquery
Update: state
Update: scrollTop, scrollLeft
Update: fallback
Update: wait
Fix: code design
Fix: callback
Fix: README.md
Fix: scroll()
Update: README.md
Update: jquery.pjax.js
Compress: jquery.pjax.js
Version: 1.31.0
Merge branch 'release/v1.31.0' into develop