* line numbers for output
* see version of downloaded docset, allow to update it without --force flag

* make good tests
* fuzzy search

* transpile html to intermediate markdown when building docset with `download`
    * allow specifying default page width
    * intermediate markdown should be markdown with colors baked in
    * when opening pages, parse colors based on --color setting, output normal markdown

* open an issue on html2text fragments

* features to lower binary size

* interactively search whole docset
    * literally open a manpage out of html with own pager

* check other devdocs browsers docsets
    * support docsets from zeal
    * allow specifying other browsers' docsets path
    * download docsets from dash
