README, license, and some credits

.github/workflows/docker-action.yml

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+# This file was generated from `meta.yml`, please do not edit manually.
+# Follow the instructions on https://github.com/coq-community/templates to regenerate.
+name: Docker CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  build:
+    # the OS must be GNU/Linux to be able to use the docker-coq-action
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        image:
+          - 'mathcomp/mathcomp:1.12.0-coq-8.13'
+          - 'mathcomp/mathcomp:1.12.0-coq-dev'
+          - 'mathcomp/mathcomp-dev:coq-8.13'
+          - 'mathcomp/mathcomp-dev:coq-dev'
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v2
+      - uses: coq-community/docker-coq-action@v1
+        with:
+          opam_file: 'coq-mathcomp-algebra-tactics.opam'
+          custom_image: ${{ matrix.image }}
+
+# See also:
+# https://github.com/coq-community/docker-coq-action#readme
+# https://github.com/erikmd/docker-coq-github-action-demo

.gitignore

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+*.d
+*.vo
+*.vio
+*.vos
+*.vok
+*.cm*
+*~
+*.glob
+*.aux
+*.a
+*.o
+Make*.coq
+Make*.coq.bak
+Make*.coq.conf
+*#
+.lia.cache
+.nia.cache

AUTHORS

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+Kazuhiko Sakaguchi  University of Tsukuba