diff --git a/.trunk/.gitignore b/.trunk/.gitignore
deleted file mode 100644
index 1e24652..0000000
--- a/.trunk/.gitignore
+++ /dev/null
@@ -1,8 +0,0 @@
-*out
-*logs
-*actions
-*notifications
-*tools
-plugins
-user_trunk.yaml
-user.yaml
diff --git a/.trunk/configs/.markdownlint.yaml b/.trunk/configs/.markdownlint.yaml
deleted file mode 100644
index fb94039..0000000
--- a/.trunk/configs/.markdownlint.yaml
+++ /dev/null
@@ -1,10 +0,0 @@
-# Autoformatter friendly markdownlint config (all formatting rules disabled)
-default: true
-blank_lines: false
-bullet: false
-html: false
-indentation: false
-line_length: false
-spaces: false
-url: false
-whitespace: false
diff --git a/.trunk/configs/.shellcheckrc b/.trunk/configs/.shellcheckrc
deleted file mode 100644
index 8c7b1ad..0000000
--- a/.trunk/configs/.shellcheckrc
+++ /dev/null
@@ -1,7 +0,0 @@
-enable=all
-source-path=SCRIPTDIR
-disable=SC2154
-
-# If you're having issues with shellcheck following source, disable the errors via:
-# disable=SC1090
-# disable=SC1091
diff --git a/.trunk/configs/.yamllint.yaml b/.trunk/configs/.yamllint.yaml
deleted file mode 100644
index 4d44466..0000000
--- a/.trunk/configs/.yamllint.yaml
+++ /dev/null
@@ -1,10 +0,0 @@
-rules:
-  quoted-strings:
-    required: only-when-needed
-    extra-allowed: ["{|}"]
-  empty-values:
-    forbid-in-block-mappings: true
-    forbid-in-flow-mappings: true
-  key-duplicates: {}
-  octal-values:
-    forbid-implicit-octal: true
diff --git a/.trunk/trunk.yaml b/.trunk/trunk.yaml
deleted file mode 100644
index 716a6d9..0000000
--- a/.trunk/trunk.yaml
+++ /dev/null
@@ -1,28 +0,0 @@
-# This file controls the behavior of Trunk: https://docs.trunk.io/cli
-# To learn more about the format of this file, see https://docs.trunk.io/reference/trunk-yaml
-version: 0.1
-cli:
-  version: 1.17.1
-plugins:
-  sources:
-    - id: trunk
-      ref: v1.2.6
-      uri: https://github.com/trunk-io/plugins
-runtimes:
-  enabled:
-    - go@1.21.0
-    - node@18.12.1
-    - python@3.10.8
-lint:
-  enabled:
-    - clang-format@16.0.3
-    - actionlint@1.6.26
-    - checkov@2.5.9
-    - git-diff-check
-    - markdownlint@0.37.0
-    - prettier@3.0.3
-    - shellcheck@0.9.0
-    - shfmt@3.6.0
-    - trivy@0.46.0
-    - trufflehog@3.60.0
-    - yamllint@1.32.0
diff --git a/doc/grammar.md b/doc/grammar.md
index 769cdcb..93f3967 100644
--- a/doc/grammar.md
+++ b/doc/grammar.md
@@ -47,7 +47,7 @@
 
 ## Introduction
 
-It is the official Wopslang language reference for v0.1 alpha.
+It is the official Wopslang language reference for v0.2 alpha.
 Because this version is a test version, so lots of stuff in here can be changed.
 Of course, lots of new grammar can be added to Wopslang.
 So, make sure to check this page when you updated Wopslang to the newest version.
@@ -531,7 +531,7 @@ ContinueStmt = "continue" .
 
 ## Builtin Functions
 
-> Note: there are only four basic functions in Wopslang v0.1. We'll add more function very soon.
+> Note: there are only four basic functions in Wopslang v0.2. We'll add more function very soon.
 
 Redirect to [here][ext-link-1]