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
example fix
astyle
type
logger main interface now is in the form logger.info(fmt, args)
Add a drop() method to remove logger from the registry

This commits allows the user to drop the registry reference to a
logger, allowing deletion of logger at any time.
Merge pull request #15 from xaqq/master

Add a drop() method to remove logger from the registry
Use fmt::pad for faster formatting of the default format pattern
pattern_formatter_impl.h update
typo
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