fix module loading
add support for whole numbers and empty strings in subscript

add support for whole numbers and empty strings in subscript
update readme
bump version to 0.1.2 for npm
update tests for filters
implement parseLiteralExpr for object/array literals including nesting and bare-identifiers
rewrite parseLiteralExpr to handle variables (not inside object/array literals)
refactor parseExpr based on parseLiteralExpr; get all tests passing with new code
fix token regex from breaking on: {% set foo = { bar: "bar" } %}
rewrite filter args and for/in parsing
fix bug in parseFilter
bump version to 0.1.3; update docs
bug fix: a.b[{}]
add exception to filter syntax for || and add test
allow simple variable in subscript notation: obj[key]
fix bug in runtime: `key in str`
add test for simple variable in subscript notation
version bump to 0.1.4
add version and link to comments
add version and link to comments