V0.5

Update external libraries:

• es6-promise.min.js 4.2.8
• jspdf.umd.min.js 2.5.1
• html2canvas.min.js 1.4.1
• html2pdf.min.js 0.10.1

which fixes problems with rigth to left character sets.

Add an new output format "event" which fires the event "openPdf" after the PDF file is generated.
See Issue #8 for details.

V0.3

Add APEX 19.1 support; Fix typo;

V0.2

Update apexplugin.json

Initial release V0.1

Update README.md