Add aarch64 wheels

Author: mattsplats

.travis.yml

@@ -21,23 +21,16 @@ python: 3.7
 sudo: required
 dist: xenial
 services: docker
+virt: vm
+group: edge
 
 matrix:
-  exclude:
-      # Exclude the default Python 3.7 build
-      - python: 3.7
   include:
     - os: linux
       env:
         - MB_PYTHON_VERSION=3.6
         - NP_BUILD_DEP="1.11.3"
         - NP_TEST_DEP="1.11.3"
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.6
-        - PLAT=i686
-        - NP_BUILD_DEP="1.11.3"
-        - NP_TEST_DEP="1.11.3"
     - os: linux
       env:
         - MB_PYTHON_VERSION=3.7
@@ -49,13 +42,47 @@ matrix:
         - NP_BUILD_DEP="1.14.5"
         - NP_TEST_DEP="1.14.5"
 
+    - os: linux
+      env:
+        - MB_PYTHON_VERSION=3.6
+        - PLAT=i686
+        - NP_BUILD_DEP="1.11.3"
+        - NP_TEST_DEP="1.11.3"
     - os: linux
       env:
         - MB_PYTHON_VERSION=3.7
         - PLAT=i686
         - NP_BUILD_DEP="1.14.5"
         - NP_TEST_DEP="1.14.5"
 
+    - os: linux
+      arch: arm64-graviton2
+      env:
+        - MB_PYTHON_VERSION=3.6
+        - NP_BUILD_DEP="1.19.3"
+        - NP_TEST_DEP="1.19.3"
+        - MB_ML_VER=2014
+        - PLAT=aarch64
+        - DOCKER_TEST_IMAGE=multibuild/xenial_arm64v8
+    - os: linux
+      arch: arm64-graviton2
+      env:
+        - MB_PYTHON_VERSION=3.7
+        - NP_BUILD_DEP="1.19.3"
+        - NP_TEST_DEP="1.19.3"
+        - MB_ML_VER=2014
+        - PLAT=aarch64
+        - DOCKER_TEST_IMAGE=multibuild/xenial_arm64v8
+    - os: linux
+      arch: arm64-graviton2
+      env:
+        - MB_PYTHON_VERSION=3.8
+        - NP_BUILD_DEP="1.19.3"
+        - NP_TEST_DEP="1.19.3"
+        - MB_ML_VER=2014
+        - PLAT=aarch64
+        - DOCKER_TEST_IMAGE=multibuild/xenial_arm64v8
+
     - os: osx
       language: generic
       env: