Issue-706: #706
PR-708: #708

Issue-707: #707
PR-710: #710
Co-authored-by: Timothée Mazzucotelli <[email protected]>

In most cases: no impact. In some cases: performance improvement, since we then only compute an object's string representation if needed (if the message level is enabled). Typically useful for debug messages, which are often hidden and should avoid runtime costs.

Templates usually log at least one message (that's what the Python handler does). It can easily mean thousands of log messages for even small code bases.

Previously, each log message computed the template path, regardless of whether the message's level was enabled or not.

Now, this template path is only computed if the message's level is enabled. That means we shave off thousands of (relatively expensive) function calls when MkDocs verbose mode isn't enabled.