build v1.3.1alpha1 branch

Author: jswhit

Diff for: .github/workflows/build-wheels.yml

@@ -38,7 +38,7 @@ jobs:
     env:
       REPO_DIR: cftime
       PKG_NAME: cftime
-      BUILD_COMMIT: v1.3.0rel
+      BUILD_COMMIT: v1.3.1alpha1
       UNICODE_WIDTH: 32
       MB_PYTHON_VERSION: ${{ matrix.python-version }}
       TRAVIS_PYTHON_VERSION: ${{ matrix.python-version }}

Diff for: .travis.yml

@@ -1,7 +1,7 @@
 env:
   global:
       - REPO_DIR="cftime"
-      - BUILD_COMMIT=v1.3.0rel
+      - BUILD_COMMIT=v1.3.1alpha1
       - PLAT=x86_64
       - UNICODE_WIDTH=32
       - NP_BUILD_DEP="numpy==1.17.3"