diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 10caba84..2c21d571 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,9 +4,9 @@ on:
   push:
     branches:
       - main
-      - main-v[0-9].**
+      - main-v[0-9]+.**
     tags:
-      - v[0-9].**
+      - v[0-9]+.**
 
   pull_request:
     types:
@@ -16,6 +16,9 @@ on:
       - auto_merge_enabled
       - edited
 
+  merge_group:
+    types: [checks_requested]
+
 jobs:
   commitlint:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/compiled_cairo.yml b/.github/workflows/compiled_cairo.yml
deleted file mode 100644
index 747c6349..00000000
--- a/.github/workflows/compiled_cairo.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: CI
-
-on:
-  push:
-    branches:
-    - main
-    tags:
-    - v[0-9].**
-
-  pull_request:
-    types:
-      - opened
-      - reopened
-      - synchronize
-    paths:
-     - 'crates/blockifier/feature_contracts/cairo0/**'
-
-jobs:
-  verify_cairo_file_dependencies:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@master
-        with:
-          components: rustfmt
-          toolchain: nightly-2024-01-12
-      - uses: Swatinem/rust-cache@v2
-      - uses: actions/setup-python@v4
-        with:
-          python-version: '3.9'
-          cache: 'pip'
-      - run:
-          pip install -r crates/blockifier/tests/requirements.txt;
-          cargo test verify_feature_contracts -- --include-ignored
diff --git a/.github/workflows/post-merge.yml b/.github/workflows/post-merge.yml
index b93bc468..bf484c6f 100644
--- a/.github/workflows/post-merge.yml
+++ b/.github/workflows/post-merge.yml
@@ -15,10 +15,5 @@ jobs:
           components: rustfmt
           toolchain: nightly-2024-01-12
       - uses: Swatinem/rust-cache@v2
-      - uses: actions/setup-python@v4
-        with:
-          python-version: '3.9'
-          cache: 'pip'
       - run:
-          pip install -r crates/blockifier/tests/requirements.txt;
           cargo test -- --include-ignored
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 00000000..951d56ca
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,32 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "committer"
+version = "0.1.0-rc.0"
+dependencies = [
+ "pretty_assertions",
+]
+
+[[package]]
+name = "diff"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56254986775e3233ffa9c4d7d3faaf6d36a2c09d30b20687e9f88bc8bafc16c8"
+
+[[package]]
+name = "pretty_assertions"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af7cee1a6c8a5b9208b3cb1061f10c0cb689087b3d8ce85fb9d2dd7a29b6ba66"
+dependencies = [
+ "diff",
+ "yansi",
+]
+
+[[package]]
+name = "yansi"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09041cd90cf85f7f8b2df60c646f853b7f535ce68f85244eb6731cf89fa498ec"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 00000000..c0cc4700
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,26 @@
+[workspace]
+# Using version 2 to avoid unifying features. For more info, read:
+#   https://doc.rust-lang.org/cargo/reference/resolver.html#feature-resolver-version-2
+resolver = "2"
+
+members = ["crates/committer"]
+
+[workspace.package]
+version = "0.1.0-rc.0"
+edition = "2021"
+repository = "https://github.com/starkware-libs/committer/"
+license = "Apache-2.0"
+license-file = "LICENSE"
+
+[workspace.dependencies]
+pretty_assertions = "1.2.1"
+
+[workspace.lints.rust]
+warnings = "deny"
+future-incompatible = "deny"
+nonstandard-style = "deny"
+rust-2018-idioms = "deny"
+unused = "deny"
+
+[workspace.lints.clippy]
+as_conversions = "deny"
diff --git a/commitlint.config.js b/commitlint.config.js
new file mode 100644
index 00000000..9b454b82
--- /dev/null
+++ b/commitlint.config.js
@@ -0,0 +1,53 @@
+const Configuration = {
+    /*
+     * Resolve and load @commitlint/config-conventional from node_modules.
+     * Referenced packages must be installed.
+     * See [the README](https://github.com/conventional-changelog/commitlint/blob/master/%40commitlint/config-conventional/README.md)
+     * for applied rules.
+     */
+    extends: ['@commitlint/config-conventional'],
+    /*
+     * Resolve and load conventional-changelog-atom from node_modules.
+     * Referenced packages must be installed
+     */
+    // parserPreset: 'conventional-changelog-atom',
+    /*
+     * Resolve and load @commitlint/format from node_modules.
+     * Referenced package must be installed
+     */
+    formatter: '@commitlint/format',
+    /*
+     * Any rules defined here will override rules from @commitlint/config-conventional
+     */
+    rules: {
+        'scope-enum': [2, 'always', [
+            'ci',
+        ]],
+    },
+    /*
+     * Functions that return true if commitlint should ignore the given message.
+     */
+    ignores: [(commit) => commit === ''],
+    /*
+     * Whether commitlint uses the default ignore rules.
+     */
+    defaultIgnores: true,
+    /*
+     * Custom URL to show upon failure
+     */
+    helpUrl:
+        'https://github.com/conventional-changelog/commitlint/#what-is-commitlint',
+    /*
+     * Custom prompt configs, not used currently.
+     */
+    prompt: {
+        messages: {},
+        questions: {
+            type: {
+                description: 'please input type:',
+            },
+        },
+    },
+};
+
+module.exports = Configuration;
diff --git a/crates/committer/Cargo.toml b/crates/committer/Cargo.toml
new file mode 100644
index 00000000..ad4ec450
--- /dev/null
+++ b/crates/committer/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "committer"
+version.workspace = true
+edition.workspace = true
+repository.workspace = true
+license-file.workspace = true
+description = "Computes and manages Starknet state."
+
+[lints]
+workspace = true
+
+[dev-dependencies]
+pretty_assertions.workspace = true
diff --git a/crates/committer/src/lib.rs b/crates/committer/src/lib.rs
new file mode 100644
index 00000000..6121599b
--- /dev/null
+++ b/crates/committer/src/lib.rs
@@ -0,0 +1,15 @@
+// TODO(Dori, 3/3/2024): Delete this dummy code.
+pub fn dummy() -> u8 {
+    7
+}
+
+#[cfg(test)]
+pub mod test {
+    use super::dummy;
+    use pretty_assertions::assert_eq;
+
+    #[test]
+    fn test_dummy() {
+        assert_eq!(dummy(), 7);
+    }
+}
diff --git a/scripts/merge_paths.json b/scripts/merge_paths.json
index 34de8855..0967ef42 100644
--- a/scripts/merge_paths.json
+++ b/scripts/merge_paths.json
@@ -1,3 +1 @@
-{
-    "main-v0.13.1": "main"
-}
+{}
diff --git a/scripts/merge_paths_test.py b/scripts/merge_paths_test.py
index 3b083904..1d8f471a 100755
--- a/scripts/merge_paths_test.py
+++ b/scripts/merge_paths_test.py
@@ -4,6 +4,10 @@
 def test_linear_path():
     merge_paths = load_merge_paths()
 
+    # No feature branches means nothing to test.
+    if len(merge_paths) == 0:
+        return
+
     src_dst_iter = iter(merge_paths.items())
     (oldest_branch, prev_dst_branch) = next(src_dst_iter)
     assert (