Added cppformat files
Using cppformat for all formatting needs instead of fast_oss
use cppformat in sinks
Start of work on lockfreee async queue
fixes in pattern formatter
Makefile - removed WShadow warning
continue with cppformatter integration
astyle
type
logger main interface now is in the form logger.info(fmt, args)
Use fmt::pad for faster formatting of the default format pattern
pattern_formatter_impl.h update
Rethrow cppformat exceptions as spdlog_ex with description of the bad format string
support for API of the form logger.info() << ..
some fixes for gcc
fix in move log_msg
throw spdlog_err on format errors
merged drop() from master
fixed async_sink to use move instead of unique_ptr
disabled formatcpp Wshadow warnings..