Release v0.5.1 · chizkidd/nbview

Hardening pass from the adversarial QA report, self-hosted fonts, and cross-browser tests.

Fixed

Very large notebooks render much faster: 5,000 cells went from about 19 s to about 3 s, and the first cell appears in half a second.
A corrupted "recently opened" list no longer breaks the home page, and a huge link is no longer saved there (it could fill the browser's storage and put a megabyte-long name in the tab title). File names are capped at 120 characters.
A GitHub token with an invisible or disallowed character is refused when saved, with an explanation. An already saved one gets a clear message instead of "couldn't reach GitHub".
nbformat 3 notebooks with odd heading levels or empty entries open instead of failing, and a JSON file that is not a notebook says so.
Odd answers from the GitHub API give a clear message instead of a stuck spinner or the word "undefined". GitHub and notebook requests time out after 20 and 60 seconds.
data:, javascript: and file: links are refused clearly.
Colab GitHub links open the notebook, git@github.com:owner/repo.git is understood, and Google Drive and Colab Drive links explain why they can't be opened.
Long file names no longer push the page sideways on phones.
Accessibility: sideways-scrolling code blocks can be reached with the keyboard and show a focus ring, and two colors are slightly darker to reach 4.5:1 contrast.

A link to a non-notebook file in a repo (for example a README) now opens its folder instead of showing a JSON error.
Page fonts are served from nbview.org instead of Google Fonts, so visiting no longer sends anything to Google.

Regression tests (npm test), also in Firefox and Safari's engine, plus an optional smoke test against the real GitHub.
A Privacy section in the README, MAINTENANCE.md and tests/README.md.