* add external_level and internal_level
* remove unnecessary debug derive on LinkDef
* clarify doc comment about link check levels
* simplify link checker logging
* add missing warn prefix
* simplify link level logging, remove "Level" from linklevel variants
* remove link level config from test site
* switch back to using bail! from get_link_domain
* move console's deps to libs
* remove unnecessary reference
* calling console::error/warn directly
* emit one error, or one warning, per link checker run
* various link checker level changes
* add docs about link checker levels
* remove accidentally committed test site
* remove completed TODO
Having to change the base URL to whatever ngrok URL was provisioned for
me was frustrating. This patch enables setting it to `/`, which will
then make the `get_url()` function simply return `/`.
* Add YAML to formats supported by load_data()
A fairly trivial addition; JSON and YAML are handled so similarly
that this was a matter of copying the JSON-relevant handlers and
editing the copies to handle YAML as well. The test file was
literally generated with 'json2yaml'.
The documentation has been updated to indicate that load_data() now
handles YAML code.
The CHANGELOG has been updated as well.
* After checking, I found that it's generally agreed the mime type is still application/x-yaml.
* Update comment, unify library importing.
I noticed one more place where the list of formats was supported,
and added YAML to that list.
I noticed that there's a singular place to load the `libs::` crate,
and unified by importing of serde_yaml in that place.
* Add `literal` as a new entry for `data source`, to be used by the `load_data` function
* Add tests to the module for plain text, json, xml, toml, and csv
* Update error messaging to include literal as a potential choice
* Update site documentation to include instructions for using `load_data` with a literal
