-switch from fontawesome to bootstrap icons (FA is too heavy)
-url change: /mining-template -> /next-block
-/node-details: split out interfaces into separate section; split out upload/download
-new fun item: value burned in OP_RETURN output
-reorganize img files
-minor ui/text tweaks
-support for accessing resources via a configurable CDN (probably cloudfront, backed by S3, as I plan to use for the public demo site)
-move resource integrity hashes into a single file (generated by "npm run integrity") for easier maintenance
-cleanup some startup logic
-more updated dependencies
-new fun item showing example of future-dated timelock (coinbase) tx
-special-case code for mainnet genesis coinbase tx, to avoid indicating that satoshi spent these unspendable coins
-tx details: skip displaying locktime when it's meaningless (the raw data is in the json if anyone wants it); show additional info about locktime meaning
-tx details: show byte-size in addition to vByte size, if applicable
-fix for recently broken donut chart on /mining-summary
-changelog
-styling tweaks: different color for "summary titles" for more visual separation; tighten up spacing a little bit; tweak page titles (esp long subtitles); block page header: move buttons to side rather than bumping whole page down;
-better and more consistent use of hexDataDisplay mixin (as well as simplifying its params)
-add copy-hex button to hex displays
-homepage: more decimals for mined supply number (since we're just about to pass 90% I want a little more fidelity right now)
-tools page tweak (doesn't matter since that page isn't linked anywhere...)
-updated changelog
the demo site was getting slammed by yandex recently - these changes are designed to reduce the impact of crawling by degrading functionality when we identify that the page is to be served to a crawler
