chore: Change module version. (#241)

* chore: Change module version.

Co-authored-by: Ben Kochie <superq@gmail.com>
Co-authored-by: YoungJoo.Kim <vozlt.x+github@gmail.com>

README.md

@@ -1820,6 +1820,8 @@ To cut a release, create a changelog entry PR with [git-chglog](https://github.c
     git checkout -b "cut-${version}"
     git-chglog -o CHANGELOG.md --next-tag "${version}"
     git add CHANGELOG.md
+    sed -i "s/NGX_HTTP_VTS_MODULE_VERSION \".*/NGX_HTTP_VTS_MODULE_VERSION \"${version}\"" src/ngx_http_vhost_traffic_status_module.h
+    git add src/ngx_http_vhost_traffic_status_module.h
     git-chglog -t .chglog/RELNOTES.tmpl --next-tag "${version}" "${version}" | git commit -F-
 
 After the PR is merged, create the new tag and release on the [GitHub Releases](https://github.com/vozlt/nginx-module-vts/releases).

src/ngx_http_vhost_traffic_status_module.h

@@ -16,7 +16,15 @@
 #include "ngx_http_vhost_traffic_status_string.h"
 #include "ngx_http_vhost_traffic_status_node.h"
 
-#define NGX_HTTP_VTS_MODULE_VERSION  "0.1.19.dev.91bdb14"
+/*
+ * This version should follow the stable releases.
+ * The format should follow https://semver.org/
+ * 
+ * If a change has some important impact, include the commit short hash here.
+ * I.E "v0.2.0+h0a1s2h"
+ *
+ */
+#define NGX_HTTP_VTS_MODULE_VERSION  "v0.2.0"
 
 #define NGX_HTTP_VHOST_TRAFFIC_STATUS_UPSTREAM_NO          0
 #define NGX_HTTP_VHOST_TRAFFIC_STATUS_UPSTREAM_UA          1