Add option to get commits since last tag; don't skip any commits

Author: cjbarth

docs/_data/global-options.yml

@@ -42,6 +42,11 @@
     valueType: '<issues|commits|milestones|prs|prs-with-issues>'
     description: 'The informations you want to use to build release notes. [issues]'
     defaultValue: issues
+-
+    short: '-h'
+    name: head
+    valueType: '<string>'
+    description: 'Which branch would you like to include commits from after the last tag?'
 -
     short: '-N'
     name: include-messages

lib/_options.js

@@ -88,6 +88,12 @@ module.exports = {
             action: /^(issues|commits|milestones|prs|prs-with-issues)$/i,
             defaultValue: 'issues'
         },
+        {
+            short: '-h',
+            name: 'head',
+            valueType: '<string>',
+            description: 'Which branch would you like to include commits from after the last tag?'
+        },
         {
             short: '-N',
             name: 'include-messages',

lib/src/Gren.js

@@ -642,15 +642,10 @@ class Gren {
      *
      * @return {string}
      */
-    _generateCommitsBody(commits = [], addEmptyCommit) {
+    _generateCommitsBody(commits = []) {
         const bodyMessages = Array.from(commits);
 
-        if (bodyMessages.length === 1 || addEmptyCommit) {
-            bodyMessages.push(null);
-        }
-
         return bodyMessages
-            .slice(0, -1)
             .filter(this._filterCommit.bind(this))
             .map(this._templateCommits.bind(this))
             .join('\n');
@@ -676,7 +671,7 @@ class Gren {
                 name: this.options.prefix + range[0].name,
                 release: range[0].name,
                 published_at: range[0].date,
-                body: this._generateCommitsBody(range[2], range[1].id === 0) + '\n'
+                body: this._generateCommitsBody(range[2]) + '\n'
             }));
 
         loaded(`Commit ranges loaded: ${ranges.length}`);
@@ -1047,7 +1042,7 @@ class Gren {
         if (sortedReleaseDates.length === 1 || this.options.tags.indexOf('all') >= 0) {
             sortedReleaseDates.push({
                 id: 0,
-                date: new Date(0)
+                date: (new Date(0)).toISOString()
             });
         }
 
@@ -1062,6 +1057,20 @@ class Gren {
             ]);
         }
 
+        if (this.options.head != null) {
+            const latest = [{
+                ...sortedReleaseDates[0],
+                name: this.options.head,
+                date: (new Date()).toISOString()
+            },
+            {
+                ...sortedReleaseDates[0]
+            }
+            ];
+
+            ranges.unshift(latest);
+        }
+
         return ranges;
     }
 
@@ -1101,7 +1110,7 @@ class Gren {
             if (releaseRange[1].name != null) {
                 ({ data: { commits } } = await this.repo.compareBranches(releaseRange[1].name, releaseRange[0].name));
             } else {
-                ({ data: commits } = await this.repo.listCommits({ until: releaseRange[1].date }));
+                ({ data: commits } = await this.repo.listCommits({ since: releaseRange[1].date, until: releaseRange[0].date }));
             }
             releaseRange.push(commits);
         }