bugfix: writestream hanging on elements with large contents

Fixes substack/html-select#8
Merge branch 'weird-incomplete-write-bug'
bugfix: writestream hanging on elements with large contents

Fixes substack/html-select#8
resume instead of ondata
2.3.14
remove unneeded slice op
2.3.15
Merge branch 'master' of https://github.com/substack/html-select