std.csv: clean imports
std.uuid: clean imports
std.zip: clean imports
std.string: clean imports
std.uni: clean imports
` if(` => ` if (`
Merge pull request #2718 from 9il/uni

std.uni: clean imports
Merge pull request #2717 from 9il/string2

std.string: clean imports
Merge pull request #2716 from 9il/uuid

std.uuid: clean imports
Merge pull request #2714 from 9il/zip

std.zip: clean imports
Merge pull request #2708 from 9il/csv

std.csv: clean imports