[Refactoring] Make unittest exhaustive
fix Issue 13284 - Cannot match shared classes at receive
Merge pull request #2418 from 9rnsr/fix13284

[REG2.066a] Issue 13284 - Cannot match shared classes at receive
Fixed std.process.system() deprecation message

wait(spawnProcess(command)) is a closer match to system(command).
Merge pull request #2422 from kyllingstad/change-system-deprecation-message

Fixed std.process.system() deprecation message
attributes and two small bug fixes for csv

some more

some reverts

nitpick

csv love update

forgot some

added one nogc

some more
Merge pull request #2349 from burner/some_love_for_csv

attributes and two small bug fixes for csv