context2d: paths sometimes not translating between pages

[ognyanstanev]

In context2d module at 3 places pages.sort() is being called. It sorts the pages as strings so 10 is before 9 for example. This causes problems when autoPaging is turned on.

1. get context2d
2. fill a rectangle for example, starting from page 10 going upwards to page 9.
3. nothing is drawn

[HackbrettXXX]

Can you share a short code snippet that reproduces the issue?

[ognyanstanev]

var doc = new jsPDF({format:[100, 100]});
var ctx = doc.context2d;
ctx.autoPaging = true;
ctx.fillRect(0, 750, 20, 100); // rectangle starting from page 8 going to page 9 is drawn
ctx.fillRect(0, 850, 20, 100); // rectangle starting from page 9 going to page 10 is not drawn

[HackbrettXXX]

Ah yes, you are right. I'll prepare a PR.