Updated UMD module name

• Renamed UMD module from caret-pos to caretPos
• Updated packages

Typings and security fixes

• Added typings
• Removed yarn in preference to npm
• Updated vulnerable packages
• isContentEditable will support other browser APIs where element.contentEditable can only be accessed by element.getAttribute('contentEditable')

Firefox bug fix

• Removed conversion from \s to   for Firefox. It's not needed.

Custom position option for offset

• Added customPos option to offset

No Shadow Caret

Added noShadowCaret option to offset

Minor updates to package information

Functionally the same, just some updates to the details of the package.

First release

Completed port and added tests

Initial release

This is a fully working port for early testing.