- remove unnecessary includes
- expunge all remaining usages of boost::format
- able to leave out the expliti string(elm) in output
- drop various operator<<, since we're now picking up
custom string conversions automatically
- delete diagnostics headers, which are now largely superfluous
- use newer helper functions occasionally
I didn't blindly change any usage of <iostream> though;
sometimes, just using the output streams right away
seems adequate.
our minimal compiler requirement is gcc-4.9 since the
transition to Debian/Jessie as reference system.
gcc-4.9 is known to treat SFINAE on private fields properly
