Support solo-single-line comment

[k1LoW]

ref: #123

test: |
  current.res.status == 200
  # This is comment
  #This is comment
  && current.res.body.foo == vars.expectFoo
  #  This is comment
   # This is comment
  && current.res.body.bar == vars.expectBar # This is NOT comment. TODO.

[github-actions]

Code Metrics Report

	main (c94fc70)	#176 (cf5f40c)	+/-
Coverage	77.9%	78.0%	+0.1%
Code to Test Ratio	1:0.7	1:0.8	+0.0

Details

  |                    | main (c94fc70) | #176 (cf5f40c) |  +/-  |
  |--------------------|----------------|----------------|-------|
+ | Coverage           |          77.9% |          78.0% | +0.1% |
  |   Files            |             22 |             22 |     0 |
  |   Lines            |           2680 |           2687 |    +7 |
+ |   Covered          |           2088 |           2095 |    +7 |
+ | Code to Test Ratio |          1:0.7 |          1:0.8 |  +0.0 |
  |   Code             |           5178 |           5190 |   +12 |
+ |   Test             |           3868 |           3908 |   +40 |

Code coverage of files in pull request scope (58.8% → 70.8%)

Files	Coverage	+/-
eval.go	70.8%	+12.0%

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Reported by octocov