Distinct error hierarchy
specs for PG::EM::Errors
rake: use namespace for tests
autoreconnect tests tuned to new error hierarchy
rake: fix test:all
cosmetic change
specs for PG::EM::FeaturedDeferrable
finetune specs for PG::EM::Errors
PG::EM::Errors renamed
more custom connection errors
dos2unix in spec
raise ConnectionRefusedError on unix socket connection
spec: name change in description
add specs for async connection refused error
more distinct errors