render error for Truthy value

[icai]

{% for link in docs %}
        <a href="/{{link.slug}}/" class="_list-item _icon-{{link.slug | split: '~' | first }} _list-dir" title="">
          <img src="/images/docs/{{link.slug | split: '~' | first }}.png" alt=""><span class="name">{{link.name}}{%if link.version and  link.version != '' %}~{{link.version}}{%endif%}
        </span></a>
{% endfor %}

docs data:

[
{"name":"Angular","slug":"angular","type":"angular","links":{"home":"https://angular.io/","code":"https://github.com/angular/angular"},
"version":"","release":"5.0.1","mtime":1510333264,"db_size":8769411},
{"name":"Angular","slug":"angular~4","type":"angular","links":{"home":"https://angular.io/","code":"https://github.com/angular/angular"},
"version":"4","release":"4.4.6","mtime":1510333140,"db_size":8247972}
]

{%if link.version and link.version != '' %}~{{link.version}}{%endif%}

catch error

"version":""
render the ~

may and operator case this, i am not sure.

but the follow is ok.

{%if link.version %}{%if link.version != '' %}~{{link.version}}{%endif%}{%endif%}

[harttle]

Liquidjs uses isTruthy (all values in Liquid are truthy except nil and false) instead of JavaScript truthy since 1.7.6 (e72f295). See #26
The and, or are implemented simply using && and ||, which is not consistent. Now fixed and published @2.0.3