diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index e961490..0f18b94 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -10,7 +10,11 @@ jobs:
         python-version: ["3.12"]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+      - uses: actions/cache@v3
+        with:
+          path: ~/.cache/pypoetry
+          key: ${{ runner.os }}-poetry-${{ hashFiles('**/poetry.lock', '**/pyproject.toml') }}
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
@@ -19,7 +23,9 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install poetry pytest
-          poetry install
+          poetry install --no-root --no-interaction
+      - name: Remove Poetry cache
+        run: poetry cache clear . --all -n
       - name: Lint with Ruff
         run: |
           pip install ruff
@@ -28,6 +34,3 @@ jobs:
       - name: Test with pytest
         run: |
           poetry run pytest
-      #- name: Generate Coverage Report
-      #  run: |
-      #    coverage report -m
diff --git a/examples/basic_example.py b/examples/basic_example.py
new file mode 100644
index 0000000..e794772
--- /dev/null
+++ b/examples/basic_example.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+"""
+Simple test to verify basic template functionality.
+"""
+
+from trim_template.trim import TrimTemplate
+
+# Simple test with basic variables
+template_vars = {
+    'page_title': 'Test Page',
+    'site_name': 'TestApp',
+    'main_heading': 'Hello World',
+    'content': 'This is a test.',
+    'current_year': 2025,
+    'user': type('User', (), {'logged_in': False})(),
+    'users': [],
+}
+
+def basic_example():
+    tmpl = TrimTemplate('examples/main.html.trim', vars=template_vars, pretty=True)
+    output = tmpl.render()
+    print("=== Basic Example Output ===\n")
+    print(output)
+
+if __name__ == '__main__':
+    basic_example()
\ No newline at end of file
diff --git a/examples/footer.html.trim b/examples/footer.html.trim
new file mode 100644
index 0000000..fa25577
--- /dev/null
+++ b/examples/footer.html.trim
@@ -0,0 +1,8 @@
+footer.site-footer
+    .footer-content
+        p © {current_year} {site_name}. All rights reserved.
+
+    .footer-links
+        a href='/privacy' Privacy Policy
+        a href='/terms' Terms of Service
+        a href='/contact' Contact Us
\ No newline at end of file
diff --git a/examples/header.html.trim b/examples/header.html.trim
new file mode 100644
index 0000000..6731987
--- /dev/null
+++ b/examples/header.html.trim
@@ -0,0 +1,11 @@
+header.navbar
+    .nav-brand
+        a href='/' {site_name}
+
+    nav.nav-menu
+        - if user.logged_in
+            a href='/profile' Profile
+            a href='/logout' Logout
+        - else
+            a href='/login' Login
+            a href='/register' Register
\ No newline at end of file
diff --git a/examples/main.html.trim b/examples/main.html.trim
new file mode 100644
index 0000000..74a7769
--- /dev/null
+++ b/examples/main.html.trim
@@ -0,0 +1,21 @@
+doctype html
+
+html
+    head
+        title {page_title}
+        stylesheet src='/styles.css'
+        meta charset='utf-8'
+
+    body
+        - render header.html.trim
+
+        main.container
+            h1 {main_heading}
+            p {content}
+
+            .user-list
+                h2 Users
+                - for user in users
+                    - render user_card.html.trim
+
+        - render footer.html.trim
\ No newline at end of file
diff --git a/examples/sub_template_example.py b/examples/sub_template_example.py
new file mode 100644
index 0000000..bfa4564
--- /dev/null
+++ b/examples/sub_template_example.py
@@ -0,0 +1,81 @@
+#!/usr/bin/env python3
+"""
+Example demonstrating sub-template usage with TrimTemplate.
+This shows how to include multiple sub-templates in a main template.
+"""
+
+from trim_template.trim import TrimTemplate
+from datetime import datetime
+
+# Simple class to represent a user object
+class User:
+    def __init__(self, id, name, email, role, avatar_url, is_admin=False):
+        self.id = id
+        self.name = name
+        self.email = email
+        self.role = role
+        self.avatar_url = avatar_url
+        self.is_admin = is_admin
+
+# Simple class to represent the current user
+class CurrentUser:
+    def __init__(self, logged_in=True, name="", email=""):
+        self.logged_in = logged_in
+        self.name = name
+        self.email = email
+
+# Sample data for the template
+template_vars = {
+    'page_title': 'User Dashboard',
+    'site_name': 'MyAwesomeApp',
+    'main_heading': 'Welcome to the Dashboard',
+    'content': 'This page demonstrates sub-template usage with header, user cards, and footer.',
+    'current_year': datetime.now().year,
+    'user': CurrentUser(
+        logged_in=True,
+        name='John Doe',
+        email='john@example.com'
+    ),
+    'users': [
+        User(
+            id=1,
+            name='Alice Johnson',
+            email='alice@example.com',
+            role='Admin',
+            avatar_url='/avatars/alice.jpg',
+            is_admin=True
+        ),
+        User(
+            id=2,
+            name='Bob Smith',
+            email='bob@example.com',
+            role='User',
+            avatar_url='/avatars/bob.jpg',
+            is_admin=False
+        ),
+        User(
+            id=3,
+            name='Carol Davis',
+            email='carol@example.com',
+            role='Moderator',
+            avatar_url='/avatars/carol.jpg',
+            is_admin=True
+        )
+    ]
+}
+
+def main():
+    # Create template instance with pretty formatting
+    tmpl = TrimTemplate('examples/main.html.trim', vars=template_vars, pretty=True)
+
+    # Render the template
+    output = tmpl.render()
+
+    print("=== Sub-Template Example Output ===\n")
+    print(output)
+
+    print("\n=== Template Debug Info ===")
+    tmpl.debug()
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file
diff --git a/examples/user_card.html.trim b/examples/user_card.html.trim
new file mode 100644
index 0000000..822a42e
--- /dev/null
+++ b/examples/user_card.html.trim
@@ -0,0 +1,13 @@
+.user-card
+    .user-avatar
+        img src={user.avatar_url} alt='{user.name} avatar'
+
+    .user-info
+        h3 {user.name}
+        p.user-email {user.email}
+        p.user-role {user.role}
+
+    .user-actions
+        a.btn.btn-primary href='/users/{user.id}' View Profile
+        - if user.is_admin
+            a.btn.btn-secondary href='/admin/users/{user.id}' Admin
\ No newline at end of file
diff --git a/poetry.lock b/poetry.lock
index 3f17609..b3563ae 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,18 +1,20 @@
-# This file is automatically @generated by Poetry 1.8.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.1.3 and should not be changed by hand.
 
 [[package]]
 name = "beautifulsoup4"
-version = "4.12.3"
+version = "4.13.4"
 description = "Screen-scraping library"
 optional = false
-python-versions = ">=3.6.0"
+python-versions = "^3.12"
+groups = ["main"]
 files = [
-    {file = "beautifulsoup4-4.12.3-py3-none-any.whl", hash = "sha256:b80878c9f40111313e55da8ba20bdba06d8fa3969fc68304167741bbf9e082ed"},
-    {file = "beautifulsoup4-4.12.3.tar.gz", hash = "sha256:74e3d1928edc070d21748185c46e3fb33490f22f52a3addee9aee0f4f7781051"},
+    {file = "beautifulsoup4-4.13.4-py3-none-any.whl", hash = "sha256:9bbbb14bfde9d79f38b8cd5f8c7c85f4b8f2523190ebed90e950a8dea4cb1c4b"},
+    {file = "beautifulsoup4-4.13.4.tar.gz", hash = "sha256:dbb3c4e1ceae6aefebdaf2423247260cd062430a410e38c66f2baa50a8437195"},
 ]
 
 [package.dependencies]
 soupsieve = ">1.2"
+typing-extensions = ">=4.0.0"
 
 [package.extras]
 cchardet = ["cchardet"]
@@ -27,6 +29,7 @@ version = "0.0.2"
 description = "Dummy package for Beautiful Soup (beautifulsoup4)"
 optional = false
 python-versions = "*"
+groups = ["main"]
 files = [
     {file = "bs4-0.0.2-py2.py3-none-any.whl", hash = "sha256:abf8742c0805ef7f662dce4b51cca104cffe52b835238afc169142ab9b3fbccc"},
     {file = "bs4-0.0.2.tar.gz", hash = "sha256:a48685c58f50fe127722417bae83fe6badf500d54b55f7e39ffe43b798653925"},
@@ -41,6 +44,8 @@ version = "0.4.6"
 description = "Cross-platform colored terminal text."
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
+groups = ["main"]
+markers = "sys_platform == \"win32\""
 files = [
     {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
     {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
@@ -48,60 +53,80 @@ files = [
 
 [[package]]
 name = "iniconfig"
-version = "2.0.0"
+version = "2.1.0"
 description = "brain-dead simple config-ini parsing"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
+groups = ["main"]
 files = [
-    {file = "iniconfig-2.0.0-py3-none-any.whl", hash = "sha256:b6a85871a79d2e3b22d2d1b94ac2824226a63c6b741c88f7ae975f18b6778374"},
-    {file = "iniconfig-2.0.0.tar.gz", hash = "sha256:2d91e135bf72d31a410b17c16da610a82cb55f6b0477d1a902134b24a455b8b3"},
+    {file = "iniconfig-2.1.0-py3-none-any.whl", hash = "sha256:9deba5723312380e77435581c6bf4935c94cbfab9b1ed33ef8d238ea168eb760"},
+    {file = "iniconfig-2.1.0.tar.gz", hash = "sha256:3abbd2e30b36733fee78f9c7f7308f2d0050e88f0087fd25c2645f63c773e1c7"},
 ]
 
 [[package]]
 name = "packaging"
-version = "23.2"
+version = "25.0"
 description = "Core utilities for Python packages"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
+groups = ["main"]
 files = [
-    {file = "packaging-23.2-py3-none-any.whl", hash = "sha256:8c491190033a9af7e1d931d0b5dacc2ef47509b34dd0de67ed209b5203fc88c7"},
-    {file = "packaging-23.2.tar.gz", hash = "sha256:048fb0e9405036518eaaf48a55953c750c11e1a1b68e0dd1a9d62ed0c092cfc5"},
+    {file = "packaging-25.0-py3-none-any.whl", hash = "sha256:29572ef2b1f17581046b3a2227d5c611fb25ec70ca1ba8554b24b0e69331a484"},
+    {file = "packaging-25.0.tar.gz", hash = "sha256:d443872c98d677bf60f6a1f2f8c1cb748e8fe762d2bf9d3148b5599295b0fc4f"},
 ]
 
 [[package]]
 name = "pluggy"
-version = "1.4.0"
+version = "1.6.0"
 description = "plugin and hook calling mechanisms for python"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.9"
+groups = ["main"]
 files = [
-    {file = "pluggy-1.4.0-py3-none-any.whl", hash = "sha256:7db9f7b503d67d1c5b95f59773ebb58a8c1c288129a88665838012cfb07b8981"},
-    {file = "pluggy-1.4.0.tar.gz", hash = "sha256:8c85c2876142a764e5b7548e7d9a0e0ddb46f5185161049a79b7e974454223be"},
+    {file = "pluggy-1.6.0-py3-none-any.whl", hash = "sha256:e920276dd6813095e9377c0bc5566d94c932c33b27a3e3945d8389c374dd4746"},
+    {file = "pluggy-1.6.0.tar.gz", hash = "sha256:7dcc130b76258d33b90f61b658791dede3486c3e6bfb003ee5c9bfb396dd22f3"},
 ]
 
 [package.extras]
 dev = ["pre-commit", "tox"]
-testing = ["pytest", "pytest-benchmark"]
+testing = ["coverage", "pytest", "pytest-benchmark"]
+
+[[package]]
+name = "pygments"
+version = "2.19.2"
+description = "Pygments is a syntax highlighting package written in Python."
+optional = false
+python-versions = ">=3.8"
+groups = ["main"]
+files = [
+    {file = "pygments-2.19.2-py3-none-any.whl", hash = "sha256:86540386c03d588bb81d44bc3928634ff26449851e99741617ecb9037ee5ec0b"},
+    {file = "pygments-2.19.2.tar.gz", hash = "sha256:636cb2477cec7f8952536970bc533bc43743542f70392ae026374600add5b887"},
+]
+
+[package.extras]
+windows-terminal = ["colorama (>=0.4.6)"]
 
 [[package]]
 name = "pytest"
-version = "8.0.2"
+version = "8.4.1"
 description = "pytest: simple powerful testing with Python"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.9"
+groups = ["main"]
 files = [
-    {file = "pytest-8.0.2-py3-none-any.whl", hash = "sha256:edfaaef32ce5172d5466b5127b42e0d6d35ebbe4453f0e3505d96afd93f6b096"},
-    {file = "pytest-8.0.2.tar.gz", hash = "sha256:d4051d623a2e0b7e51960ba963193b09ce6daeb9759a451844a21e4ddedfc1bd"},
+    {file = "pytest-8.4.1-py3-none-any.whl", hash = "sha256:539c70ba6fcead8e78eebbf1115e8b589e7565830d7d006a8723f19ac8a0afb7"},
+    {file = "pytest-8.4.1.tar.gz", hash = "sha256:7c67fd69174877359ed9371ec3af8a3d2b04741818c51e5e99cc1742251fa93c"},
 ]
 
 [package.dependencies]
-colorama = {version = "*", markers = "sys_platform == \"win32\""}
-iniconfig = "*"
-packaging = "*"
-pluggy = ">=1.3.0,<2.0"
+colorama = {version = ">=0.4", markers = "sys_platform == \"win32\""}
+iniconfig = ">=1"
+packaging = ">=20"
+pluggy = ">=1.5,<2"
+pygments = ">=2.7.2"
 
 [package.extras]
-testing = ["argcomplete", "attrs (>=19.2.0)", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "setuptools", "xmlschema"]
+dev = ["argcomplete", "attrs (>=19.2)", "hypothesis (>=3.56)", "mock", "requests", "setuptools", "xmlschema"]
 
 [[package]]
 name = "ruff"
@@ -109,6 +134,7 @@ version = "0.2.2"
 description = "An extremely fast Python linter and code formatter, written in Rust."
 optional = false
 python-versions = ">=3.7"
+groups = ["main"]
 files = [
     {file = "ruff-0.2.2-py3-none-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl", hash = "sha256:0a9efb032855ffb3c21f6405751d5e147b0c6b631e3ca3f6b20f917572b97eb6"},
     {file = "ruff-0.2.2-py3-none-macosx_10_12_x86_64.whl", hash = "sha256:d450b7fbff85913f866a5384d8912710936e2b96da74541c82c1b458472ddb39"},
@@ -131,16 +157,29 @@ files = [
 
 [[package]]
 name = "soupsieve"
-version = "2.5"
+version = "2.7"
 description = "A modern CSS selector implementation for Beautiful Soup."
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
+files = [
+    {file = "soupsieve-2.7-py3-none-any.whl", hash = "sha256:6e60cc5c1ffaf1cebcc12e8188320b72071e922c2e897f737cadce79ad5d30c4"},
+    {file = "soupsieve-2.7.tar.gz", hash = "sha256:ad282f9b6926286d2ead4750552c8a6142bc4c783fd66b0293547c8fe6ae126a"},
+]
+
+[[package]]
+name = "typing-extensions"
+version = "4.14.1"
+description = "Backported and Experimental Type Hints for Python 3.9+"
+optional = false
+python-versions = ">=3.9"
+groups = ["main"]
 files = [
-    {file = "soupsieve-2.5-py3-none-any.whl", hash = "sha256:eaa337ff55a1579b6549dc679565eac1e3d000563bcb1c8ab0d0fefbc0c2cdc7"},
-    {file = "soupsieve-2.5.tar.gz", hash = "sha256:5663d5a7b3bfaeee0bc4372e7fc48f9cff4940b3eec54a6451cc5299f1097690"},
+    {file = "typing_extensions-4.14.1-py3-none-any.whl", hash = "sha256:d1e1e3b58374dc93031d6eda2420a48ea44a36c2b4766a4fdeb3710755731d76"},
+    {file = "typing_extensions-4.14.1.tar.gz", hash = "sha256:38b39f4aeeab64884ce9f74c94263ef78f3c22467c8724005483154c26648d36"},
 ]
 
 [metadata]
-lock-version = "2.0"
+lock-version = "2.1"
 python-versions = "^3.12"
-content-hash = "1dbf8bd6d55e95f25b62a5f4f7fc30607516b757418d8d955fb9050dd1064741"
+content-hash = "1c8af31b8cc0775e1c94fd59d2fc1c2d35b8c6071426969f7daf464d9333b3c4"
diff --git a/pyproject.toml b/pyproject.toml
index c894ed1..fabe502 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "trim-template"
-version = "0.1.3"
+version = "1.0.0"
 description = "A templating engine inspired by Ruby's Slim template engine"
 authors = ["David Kelly"]
 license = "MIT License"
diff --git a/trim_template/node_parser.py b/trim_template/node_parser.py
index 32383ba..b434305 100644
--- a/trim_template/node_parser.py
+++ b/trim_template/node_parser.py
@@ -1,6 +1,3 @@
-# from trim import TrimTemplate
-import os
-
 SINGLE_TAGS = ["doctype", "img", "br", "hr", "input", "link", "meta"]
 BOOLEAN_ATTRIBUTES = [
     'checked', 'selected', 'disabled', 'readonly', 'multiple', 'ismap', 'defer', 'declare', 'noresize', 'nowrap',