Because this API only errors when write!() errors occur, we can return
the exit code as an error here.
This way the user of the API can immediately exit if there was an IO
error, but the API automatically takes care of the right return value,
returning (exiting) with zero (0) if there was an "Broken pipe" error
and with one (1) otherwise, which is the expected behaviour here.
All calls to that API were changed accordingly.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
This patch also removes the (unused) "compile" subcommand and replaces
it with a flag "-c" / "--compile" which prints the output in formatted
to the terminal.
Compiling the output from markdown to HTML and showing in the browser is
not yet possible.
The imag-view command was redesigned with this change. It now looks up
view-templates in the config and calls them with the "in" subcommand.
This way, an entry can be viewed with editor, browser or whatever one
likes.
Compiling markdown is not supported yet.
This patch removes unused crate imports reported by newer rust versions.
Some crates were only required for tests, some only for tests with
macro_import - these things were fixed with feature gates.
