catch exceptions for StartRenderPage event

prep for v1.3.1 release

catch and handle canvas exceptions

refactor test scripts, update README for test with exceptions

publish @1.2.4

Merge pull request modesty#227 from modesty/dependabot/npm_and_yarn/x…

…mldom-0.5.0

build(deps): bump xmldom from 0.4.0 to 0.5.0

MAINT: update node version

Merge pull request modesty#166 from ejminmehranian/master

users can get the selected value from dropdowns

v1.1.4: complete transform stream

v1.0.8: breaking change for x coordinate page unit conversion, client…

… renderer needs update. See readme for more details