update changelog

Author: m.kindritskiy

docs/docs/changelog.md

@@ -5,6 +5,8 @@ title: Changelog
 
 ## [Unreleased](https://github.com/lets-cli/lets/releases/tag/v0.0.X)
 
+## [0.0.50](https://github.com/lets-cli/lets/releases/tag/v0.0.50)
+
 * `[Dependency]` upgrade cobra to 1.6.0
 * `[Dependency]` upgrade logrus to 1.9.0
 * `[Fixed]` Removed builtin `--help` flag for subcommands. Now using `--help` will pass this flag to underlying `cmd` script.

lets.yaml

@@ -13,10 +13,19 @@ commands:
     description: Create tag and push
     options: |
       Usage: lets release <version> --message=<message>
+
       Options:
-        <version>       Set version
+        <version>                  Set version (e.g. 1.0.0)
         --message=<message>, -m    Release message
+
+      Example:
+        lets release 1.0.0 -m "Release 1.0.0"
     cmd: |
+      if [[ -z "$(grep "\[${LETSOPT_VERSION}\]" docs/docs/changelog.md)" ]]; then
+        echo "Version ${LETSOPT_VERSION} not found in changelog. Update docs/docs/changelog.md and try again."
+        exit 1
+      fi
+
       git tag -a v${LETSOPT_VERSION} -m "${LETSOPT_MESSAGE}"
       git push --tags