Try to publish binary artifacts to GitHub Actions (#556)

* Try to publish binary artifacts to GitHub Actions

.github/workflows/go.yml

@@ -1,4 +1,4 @@
-name: Go
+name: Miller-Go
 
 on:
   push:
@@ -30,3 +30,16 @@ jobs:
       # using `-v`, `-vv`, or `-vvv`. Commit changes to this file and re-push to GitHub
       # and let the GitHub Actions re-run.
       run: cd go && go test -v miller/src/... && ./mlr regtest -s 5
+
+    - name: PrepareArtifactNonWindows
+      if: matrix.os != 'windows-latest'
+      run: mkdir -p bin/${{matrix.os}} && cp go/mlr bin/${{matrix.os}}
+
+    - name: PrepareArtifactWindows
+      if: matrix.os == 'windows-latest'
+      run: mkdir -p bin/${{matrix.os}} && cp go/mlr.exe bin/${{matrix.os}}
+
+    - uses: actions/upload-artifact@v2
+      with:
+        name: mlr-${{matrix.os}}
+        path: bin/${{matrix.os}}/*

go/todo.txt

@@ -3,7 +3,7 @@ TOP OF LIST:
 
 * emit * regex * fmtnum * localtime *
 * --nr-progress-mod * mlr -k *
-* cli-audits * doc6 * survey * check issues *
+* gha binaries * cli-audits * doc6 * survey * check issues *
 
 ----------------------------------------------------------------
 * mlr -k