Update Quill 1.1.7, add html render

Added

• Quill html render
• Quill html render demo
• placeholder property
• useContentReset property
• enableEditor and disableEditor functions
• Another Quill bubble demo

Updated

• Quill 1.1.7
• Readme

Quill 1.1.7 Changes

• Fix dropdown values reverting to default #901
• Add config to prevent scroll jumping on paste #1082
• Prevent scrolling on API source calls #1152
• Fix tsconfig build error #1165
• Fix delete and formatting interaction in Firefox #1171
• Fix cursor jump on formatting in middle of text #1176