Add the SPDLOG_USE_WCHAR tweak to enable support for Unicode names on Windows. Refs #111

 console color example

ANSI color sink decorator

Added SQLite3 sink to the solution

Fixed issue #179 (Conflict with Boost.Asio) (by defining FMT_USE_WINDOWS_H=0 in format.h and preventing include of windows.h)

assigned nullptr to _database and _query_stmt upon flushing so that if flush gets called again, will not throw an exception

changed ctrs,variables,argsguments to match code style of spdlog, also removed columns mapping since there is no clean way of set column name dynamically on a prepared statement and changed query to use prepared statements