homebrew formula needs updating

[Former user]

Just thought you should know, when running "brew doctor" I got the following warnings...

Warning: Calling Formula.sha1 is deprecated!
Use Formula.sha256 instead.
/usr/local/Library/Taps/juretta/homebrew-spy/spy.rb:6:in `<class:Spy>'
Please report this to the juretta/spy tap!

Warning: Calling SoftwareSpec#sha1 is deprecated!
Use SoftwareSpec#sha256 instead.
/usr/local/Library/Taps/juretta/homebrew-spy/spy.rb:6:in `<class:Spy>'
Please report this to the juretta/spy tap!

Warning: Calling Resource#sha1 is deprecated!
Use Resource#sha256 instead.
/usr/local/Library/Taps/juretta/homebrew-spy/spy.rb:6:in `<class:Spy>'
Please report this to the juretta/spy tap!

[Stefan Saasen]

Thanks for raising this. This has been fixed in https://github.com/juretta/homebrew-binaries/pull/1