Unless should support {{else}}

[ericharding]

Before this change if 'test' was true nothing would be rendered in the template (and no error would be raised). This makes the else show up as expected. I believe this is supported by the original handlebars but I haven't tested.

{{#unless test}}
A
{{else}}
B
{{/unless}}

[codecov[bot]]

Codecov Report

Merging #46 into master will decrease coverage by 0.2%. The diff coverage is 0%.

@@            Coverage Diff             @@
##           master      #46      +/-   ##
==========================================
- Coverage   91.07%   90.86%   -0.21%     
==========================================
  Files           2        2              
  Lines         437      438       +1     
  Branches       85       85              
==========================================
  Hits          398      398              
- Misses         24       25       +1     
  Partials       15       15

Impacted Files	Coverage Δ
pybars/_compiler.py	90.74% <0%> (-0.22%)	:arrow_down:

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[wbond]

Can you add some tests for this change?

[wbond]

This was added with a test in #70