Changed the internal 'if' helper such that it can test not only paths/variable names, but also numeric constants.

This will be helpful for subexpressions later, when testing numeric subexpressions return values,

eg: {{#if (eq 0 (mod @index 3))}}

Also added a test for this.
Changed the internal 'if' helper such that it can test not only paths/variable names, but also numeric constants.

This will be helpful for subexpressions later, when testing numeric subexpressions return values,

eg: {{#if (eq 0 (mod @index 3))}}

Also added a test for this.