not(foo) auto-corrected to notfoo

[mikestok]

Using rubocop 0.36.0 and b9205cb (ruby 2.3.0 and no .rubocop.yml) not(foo) is incorrectly autocorrected:

✔ ~/tmp/rubobug
12:32 $ cat bug.rb
#!/usr/bin/env ruby

def foo
  false
end

puts "banana" if true && not(foo)
✔ ~/tmp/rubobug
12:32 $ bundle exec rubocop --auto-correct bug.rb
Inspecting 1 file
W

Offenses:

bug.rb:7:18: W: Literal true appeared in a condition.
puts "banana" if true && notfoo
                 ^^^^
bug.rb:7:26: C: [Corrected] Use ! instead of not.
puts "banana" if true && not(foo)
                         ^^^
bug.rb:7:26: C: [Corrected] Space after keyword not is missing.
puts "banana" if true && not(foo)
                         ^^^
bug.rb:7:29: C: [Corrected] Do not use parentheses for method calls with no arguments.
puts "banana" if true && not(foo)
                            ^

1 file inspected, 4 offenses detected, 3 offenses corrected
✘-1 ~/tmp/rubobug
12:32 $ cat bug.rb
#!/usr/bin/env ruby

def foo
  false
end

puts "banana" if true && notfoo

[lumeet]

There are at least three bugs shown in this report. :) My PR fixes two of them. but Style/Not should still either accept not(foo) or actually auto-correct it instead of just saying so. I'll try to find some time to fix that one tomorrow, unless someone else is quick to do it before.