Merge changes from stable-7 in to api-8

Signed-off-by: Gabriel Harris-Rouquette <gabizou@me.com>

.github/CONTRIBUTING.md

@@ -0,0 +1,5 @@
+# Contribution Guidelines
+
+We will always have a need for developers to help us improve Sponge. There is no such thing as a perfect project and things can always be improved. If you are a developer and are interested in helping then please do not hesitate. Just make sure you follow our guidelines.
+
+Please check our [Contribution Guidelines in the Sponge Documentation](https://docs.spongepowered.org/en/contributing/guidelines.html) for more information.

.github/workflows/build-project.yaml

@@ -5,9 +5,9 @@ name: Java CI with Gradle
 
 on:
   push:
-    branches: [ api-8 ]
+    branches: [ stable-7, 'api-*' ]
   pull_request:
-    branches: [ api-8 ]
+    branches: [ 'api-*' ]
 
 jobs:
   build:
@@ -30,5 +30,9 @@ jobs:
           java-version: 1.8
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
+      - name: Setup environment variables
+        run: |
+          echo "GIT_COMMIT=${GITHUB_SHA}" >> $GITHUB_ENV
+          echo "GIT_BRANCH=${GITHUB_REF##*/}" >> $GITHUB_ENV
       - name: Build with Gradle
         run: ./gradlew build

.github/workflows/check-license.yaml

@@ -5,9 +5,9 @@ name: License Check
 
 on:
   push:
-    branches: [ api-8 ]
+    branches: [ stable-7, api-8 ]
   pull_request:
-    branches: [ api-8 ]
+    branches: [ stable-7, api-8 ]
 
 jobs:
   build:
@@ -28,5 +28,5 @@ jobs:
           java-version: 1.8
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
-      - name: Build with Gradle
+      - name: Check license
         run: ./gradlew checkLicenses

.github/workflows/deploy_release.yaml

@@ -1,7 +1,7 @@
 # This workflow will build a package using Gradle and then publish it to GitHub packages when a release is created
 # For more information see: https://github.com/actions/setup-java#publishing-using-gradle
 
-name: Publish plugin-meta to Maven and Github Packages
+name: Publish SpongeAPI to Maven and Github Packages
 
 on:
   push:
@@ -22,7 +22,7 @@ jobs:
           settings-path: ${{ github.workspace }} # location for the settings.xml file
       - uses: actions/cache@v2
         with:
-          path: ~/.gradle/caches
+          path:  ${{ github.workspace }}/.gradle/caches
           key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}
           restore-keys: |
             ${{ runner.os }}-gradle-