Fix: respect parameter order when using "for ... reversed" (#231)

* fix: spelling

* fix: respect param order for reversed

* docs: add for-reversed order details

* perf: improve performance by 4x by simplified parseFile

BREAKING CHANGES:
- previously deprecated `getTemplate()` and `getTemplateSync()` not no longer supported
- `opts` no longer support dynamic set in `parseFile()`, `renderFile()` arguments

* perf: parse filenames in parse() insteadof render()

* docs: update description of LiquidJS

Co-authored-by: harttle <[email protected]>

docs/source/tags/for.md

@@ -106,7 +106,7 @@ There's a `forloop` object available inside `for` loops. It's used to indicate t
 The `forloop.first`, `forloop.last` and `forloop.length` property:
 
 Input
-```
+```liquid
 {% for i in (1..5) %}
   {%- if forloop.first == true -%} First
   {%- elsif forloop.last == true -%} Last
@@ -116,7 +116,7 @@ Input
 ```
 
 Output
-```
+```text
 First
 5
 5
@@ -218,3 +218,29 @@ Output
 ```text
 6 5 4 3 2 1
 ```
+
+When used with additional parameters, order is important. Leading with `reversed` reverses the order of the loop before executing the other parameters.
+
+Input
+```liquid
+{% for i in (1..8) reversed limit: 4 %}
+  {{ i }}
+{% endfor %}
+```
+
+Output
+```text
+8 7 6 5
+```
+
+Input
+```liquid
+{% for i in (1..8) limit: 4 reversed %}
+  {{ i }}
+{% endfor %}
+```
+
+Output
+```text
+4 3 2 1
+```