Add `zero?` to Number, Time::Span, and Complex#4026

Merged

bcardiff merged 5 commits intocrystal-lang:masterfrom danini-the-panini:patch-1

Jun 23, 2017

+39

Commits on Jun 22, 2017

Add zero? to Number
Daniel Smith
committed
Add zero? method to Time::Span
Daniel Smith
committed
Add zero? method to Complex
Daniel Smith
committed
Change zero? implementation
Daniel Smith
committed

Commits on Jun 23, 2017

Fix formatting regarding newlines
Brian J. Cardiff
committed