5.0.0, retroactively tagged. Previous attempt at tagging this never made it through to github. Major changes: - The PGSTD namespace alias is gone. Use the std namespace directly. - pqxx::tuple is now pqxx::row, to avoid clashes with std::tuple. - Deprecated escape_binary functions dropped. - Deprecated notify_listener class dropped. - Support for many old compilers dropped. - Support for "long long" and "long double" types is always enabled. - No longer uses obsolete std::tr1 namespace; use plain std instead. - Now requires libpq 9.1 or better. - Requires server version 9.1 or better. - Support for REPEATABLE READ isolation level added. - Makefile fixes for Visual Studio 2013. - Supports C++11 and C++14. - No longer has obsolete debian & RPM packaging built in. - Fixed failure to abort uncommitted subtransactions on destruction. - Fixed failure to detect some integer overflows during conversion. - Build tooling uses /usr/bin/env python instead of /usr/bin/python. - New configure options: --with-postgres-include and --with-postgres-lib. - In g++ or compatible compilers, non-exported items are no longer accessible. - Many build fixes for various platforms and compilers.