This refactors how Doom captures and redirects its output (to stdout and
stderr) into a more general with-output-to! macro, and:
- Simplifies the "print level" system. The various doom-print-*-level
variables have been removed.
- Adds a new print level: notice, which will be the default level for
all standard output (from print!, doom-print, prin[ct1], etc).
- Adds a with-output-to! macro for capturing and redirecting
output to multiple streams (without suppressing it from stdout). It
can also be nested.
- Changes the following about doom-print:
- Default :format changed to nil (was t)
- Default :level changed to t (was `doom-print-level`)
- No longer no-ops if OUTPUT is only whitespace
b7bd27d22b