refactor: update status command to get branches previous release in parallel

Author: zdm

lib/commands/status.js

@@ -173,14 +173,23 @@ Clone wiki:              ${ ansi.hl( upstream.wikiSshCloneUrl ) }
             },
         } );
 
+        await Promise.all( Object.keys( status.branchStatus ).map( branchName =>
+            pkg.git
+                .getPreviousRelease( {
+                    "commitRef": branchName,
+                } )
+                .then( res => {
+                    status.branchStatus[ branchName ].previousRelease = res;
+                } ) ) );
+
         for ( const branchName of Object.keys( status.branchStatus ).sort( pkg.git.compareBranches ) ) {
-            const res = await pkg.git.getPreviousRelease( { "commitRef": branchName } );
+            const previousRelease = status.branchStatus[ branchName ].previousRelease;
 
             table.write( {
                 branchName,
                 "syncStatus": status.branchStatus[ branchName ],
-                "previousRelease": res.data,
-                "unreleasedCommits": res.data,
+                "previousRelease": previousRelease.data,
+                "unreleasedCommits": previousRelease.data,
             } );
         }