jtv/libpqxx 8.0.0-rc4

libpqxx 8.0.0 release candidate 4

on GitHub

The useful, now-or-virtually-never changes for 8.0 just keep coming. Here's another release candidate that you may want to try.

Changes from release candidate 3:

• No longer trying to support std::filesystem.
• composite_into_buf() now returns a zview.
• Optionally pass encoding_group into params (or connection or transaction).
• Export helper to render a std::source_location as text.
• More IDE-friendly text format for source locations.
• Enable tests to run even on ASCII databases (just skip some encoding tests).
• Document: result::affected_rows() also works for SELECT. (#1139)
• Use C++26 reflection, if available, to figure out types' names.
• Rename pqxx::out_of_memory to pqxx::server_out_of_memory for clarity.
• pqxx::protocol_violation is now an sql_error, not a broken_connection.
• All libpqxx exceptions now derive from pqxx::failure.
• pqxx::failure now derives straight from std::exception, not std::runtime_error.
• Exceptions now know their name, whether they break the connection, etc.
• All additional properties on libpqxx exceptions are available in pqxx::failure.
• Require PostgreSQL 11 server or better.