Detect subroutine definitions without brackets

[krvajal]

Fixes issue #61

[codecov]

Codecov Report

Merging #64 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master      #64   +/-   ##
=======================================
  Coverage   13.21%   13.21%           
=======================================
  Files           9        9           
  Lines         348      348           
  Branches       49       49           
=======================================
  Hits           46       46           
  Misses        302      302

Impacted Files	Coverage Δ
src/lib/functions.ts	30.76% <0%> (ø)	⬆️

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