v1.3.0

1eda38d doc: for text and annotation prop
070057a feat: prop for enabling/disabling pdf text layer
12a53e6 feat: prop for enabling pdf annotation layer
7ebdf99 Create PULL_REQUEST_TEMPLATE.md
4e52bf5 Merge pull request #14 from Sammyjo20/master
0f0e9ce Update issue templates
f62c0d8 Documentation
c5e79fd Added loading event