Fix consistency in function `int_to_string()` - #2193

Merged

nlohmann merged 3 commits into

nlohmann:developfrom

dota17:issue#2059

Jun 24, 2020

Commits on Jun 16, 2020

fix issue#2059
dota17
committed
691fb0c

Commits on Jun 22, 2020

to allow for ADL in int_to_string() function
dota17
committed
aeef507

Commits on Jun 23, 2020

drop std::enable_if part
dota17
committed
0ecf297