Make 'zoom' independent from 'page' in the hash parameters
Merge pull request #3864 from Snuffleupagus/independent-zoom-parameter

Make 'zoom' independent from 'page' in the hash parameters
Reduce the memory usage of the operator list.
Fixes glyphs with invalid flags
Merge pull request #3913 from brendandahl/int-ops

Reduce the memory usage of the operator list.
Remove slow commands check.
Merge pull request #3887 from yurydelendik/bug903856

Fixing glyphs with invalid flags
Don't traverse all pages to get a single page.
Fixes gidStart for CID fonts
Merge pull request #3848 from brendandahl/page-refs

Don't traverse all pages to get a single page.
Use page promise for text extraction.
Merge pull request #3917 from yurydelendik/issue-3857

Fixes gidStart for CID fonts
Merge pull request #3920 from brendandahl/text-promise

Use page promise for text extraction.
Uses postMessage transfers
Uses blob URL instead of data when possible
Merge pull request #3916 from brendandahl/remove-slow-commands

Remove slow commands check.
Comment fix: shedule -> schedule
Merge pull request #3904 from yurydelendik/mem-redux

Reduces amount of memory allocated during worker operations