Replace travis-ci with github actions

.github/workflows/deployment.yaml

+name: Deployment
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - '*'
+
+jobs:
+  publish-conda-package:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Prepare
+      run: |
+        $CONDA/bin/conda install --quiet --yes conda-build anaconda-client
+        $CONDA/bin/conda config --append channels conda-forge
+        $CONDA/bin/conda config --set anaconda_upload yes
+
+    - name: Build and upload
+      env:
+        ANACONDA_TOKEN: ${{ secrets.ANACONDA_TOKEN }}
+      run: |
+        $CONDA/bin/conda build --token $ANACONDA_TOKEN conda-recipe

.travis.yml

-language: python
-python:
-  - 3.6
-
-# Build only tagged commits
-if: tag IS present
-
-before_install:
-  - wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh
-  - bash miniconda.sh -b -p $HOME/miniconda
-  - export PATH="$HOME/miniconda/bin:$PATH"
-  - conda config --append channels conda-forge
-  - conda config --set always_yes yes
-  - conda config --set anaconda_upload no
-
-install:
-  - conda update -q conda
-  - conda install -q python=$TRAVIS_PYTHON_VERSION conda-build anaconda-client
-
-script:
-  - conda build conda-recipe
-
-deploy:
-  provider: script
-  script: anaconda -t $ANACONDA_TOKEN upload $HOME/miniconda/conda-bld/**/pyzebra-*.tar.bz2
-  on:
-    branch: master
-    tags: true
-
-notifications:
-  email: false