make Util.fillTemplate support nested varnames like {foo.bar}
add an empty jbrowse_conf.json, with a comment
add comments to index.html directed at people trying to integrate jbrowse in their apps
make `conf` config adaptor have better handling, and always treat `include` vars as arrays
make the `plugins`  conf var support being an object instead of an array (but still back-compatible)
make jbrowse have enough defaults that it can start with th no bootstrap configuration at all