Add release workflow [patch]

.github/workflows/release.yml

@@ -0,0 +1,24 @@
+on:
+  push:
+    # Sequence of patterns matched against refs/tags
+    tags:
+      - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
+
+name: Create Release
+
+jobs:
+  build:
+    name: Create Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+

version_bump.R

@@ -0,0 +1,44 @@
+#' Bump version based on version instructions in commit
+#' or automatically for cron jobs
+#' @param commit latest commit
+#' @param cron is it a cron job (logical)
+#' @param changes are there any changed files (logical)
+#' 
+
+bump_version <- function(commit, cron, changes) {
+
+current_ver <- semver::parse_version(readLines("version.txt"))
+
+if (cron==TRUE) {
+  if (changes==TRUE) { # for cron jobs, only bump if update_data.R resulted in changed files
+# Cron job with new data, increment minor version
+new_ver <- semver::increment_version(current_ver, "minor", 1L)
+    }
+} else { # this is triggered by an update to Main or by a PR on a branch
+  # parse the most recent commit for version instructions 
+
+  if (grepl("\\[no version bump\\]", commit, ignore.case = TRUE))
+  {
+    new_ver <- current_ver
+    paste("No version bump")
+  } else if (grepl("\\[major\\]", commit, ignore.case = TRUE)) {
+    new_ver <- semver::increment_version(current_ver, "major", 1L)
+    print("Bumping major version")
+  } else if (grepl("\\[minor\\]", commit, ignore.case = TRUE)) {
+    new_ver <- semver::increment_version(current_ver, "minor", 1L)
+    print("Bumping minor version")
+  } else if (grepl("\\[patch\\]", commit, ignore.case = TRUE)) {
+    new_ver <- semver::increment_version(current_ver, "patch", 1L)
+    print("Bumping patch version")
+  } else {
+    stop(paste("The final commit message in a set of changes must be tagged",
+               "with version increment information.\nOptions include",
+               "[major], [minor], [patch], and [no version bump].\n",
+               "The last commit in this set of changes is:\n",
+               commit))
+  }
+}
+
+writeLines(as.character(new_ver), "version.txt") 
+
+}