Revert change to let TDZ error (slide 22).
Reverts a part of 984cf88.
Per es-discuss, temporal dead zone is about use-before-declaration, not use-before-initialization.
It still boggles my mind that the PDF diff is readable.
Minor updates, including some reordering.
PDF diffs are surprisingly readable.
First draft of index not written in the GitHub web UI.
Create gh-pages branch via GitHub