Implement release process

.github/PULL_REQUEST_TEMPLATE.md

@@ -9,4 +9,6 @@
 
 [//]: # (Stay ahead of things, add list items here!)
 - [ ] OPTIONAL: Update [Spec](https://github.com/ethereum/fe/blob/master/spec/index.md) if applicable
+- [ ] Add entry to the [release notes](https://github.com/ethereum/fe/blob/master/newsfragments/README.md) (may forgo for trivial changes)
+
 - [ ] Clean up commit history

.github/workflows/main.yml

@@ -3,6 +3,9 @@ name: CI
 on:
   push:
     branches: [ master ]
+    tags:
+      - v*
+
   pull_request:
     branches: [ master ]
 
@@ -52,6 +55,8 @@ jobs:
         toolchain: nightly
         override: true
         components: rustfmt, clippy
+    - name: Validate release notes entry
+      run: ./newsfragments/validate_files.py
     - name: Lint with rustfmt
       uses: actions-rs/cargo@v1
       with:
@@ -115,4 +120,36 @@ jobs:
           toolchain: nightly
           override: true
       - name: Run WASM tests
-        run: wasm-pack test --node -- --workspace
+        run: wasm-pack test --node -- --workspace
+
+
+  release:
+      # Only run this when we push a tag
+      if: startsWith(github.ref, 'refs/tags/')
+      runs-on: ${{ matrix.os }}
+      needs: [lint, test, wasm-test]
+      strategy:
+        matrix:
+          os: [ubuntu-latest]
+
+      steps:
+        - uses: actions/checkout@v2
+        - name: Install Linux dependencies
+          if: startsWith(matrix.os,'ubuntu')
+          run: |
+            sudo apt-get install -y libboost-all-dev
+        - name: Install latest nightly
+          uses: actions-rs/toolchain@v1
+          with:
+            profile: minimal
+            toolchain: nightly
+            override: true
+        - name: Build
+          run: cargo build --all-features --release && strip target/release/fe && mv target/release/fe target/release/fe_amd64
+        - name: Release
+          uses: softprops/action-gh-release@v1
+          with:
+            files: target/release/fe_amd64
+            prerelease: true
+          env:
+            GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.towncrier.template.md

@@ -0,0 +1,28 @@
+{% for section, _ in sections.items() %}
+{%- if section %}{{section}}{% endif -%}
+
+{% if sections[section] %}
+{% for category, val in definitions.items() if category in sections[section]%}
+### {{ definitions[category]['name'] }}
+
+{% if definitions[category]['showcontent'] %}
+{% for text, values in sections[section][category].items() %}
+- {{ values|join(', ') }} {{ text }}
+{% endfor %}
+
+{% else %}
+- {{ sections[section][category]['']|join(', ') }}
+
+{% endif %}
+{% if sections[section][category]|length == 0 %}
+No significant changes.
+
+{% else %}
+{% endif %}
+
+{% endfor %}
+{% else %}
+No significant changes.
+
+{% endif %}
+{% endfor %}