List Debian instructions in the README

Fixed qt_sinks ctor

Added additional information for error handler

Removed default args #2055

The fmt::format call should not throw formatting the exception message and the source code location.

Mixing char types in libfmt is a problem and WIP.

There's actually a diffent string view type for wide string...

 does not work with wchar_t based string.

Useful when formatting log messages fails. Now you can tell which log message caused the problem.

better file name for hourly file sink

The install instructions for "header only" refers to the wrong folder

Fix #2034

bin_to_hex.h: include spdlog.h 

remove std::distance usage

std::distance internally runs a loop, which may or may not be optimized
away. Just use simple arithmetic.
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Ensure exported package is relocatable

As per CMake's Importing and Exporting Guide[1],
configure_package_config_file() should be used for configuring the
package configuration file, not the regular configure_file() function.

This ensures that a spdlog package built on one system (with a given
directory tree) can be imported from a different system -
e.g. creating a pre-compiled spdlog package for use on different
systems.

[1]: https://cmake.org/cmake/help/git-stage/guide/importing-exporting/index.html#id8