- introduce new flag to include open PRs into the changelog

- only fetch open with this flag
- expand pull request spec with
  - status, created at timestamp
- expand definition for placeholder patterns in the changelog

__tests__/releaseNotes.test.ts

@@ -16,6 +16,7 @@ it('Should have empty changelog (tags)', async () => {
     repo: 'release-changelog-builder-action',
     fromTag: 'v0.0.1',
     toTag: 'v0.0.2',
+    includeOpen: false,
     failOnError: false,
     commitMode: false,
     configuration
@@ -33,6 +34,7 @@ it('Should match generated changelog (tags)', async () => {
     repo: 'release-changelog-builder-action',
     fromTag: 'v0.0.1',
     toTag: 'v0.0.3',
+    includeOpen: false,
     failOnError: false,
     commitMode: false,
     configuration
@@ -58,6 +60,7 @@ it('Should match generated changelog (refs)', async () => {
     repo: 'release-changelog-builder-action',
     fromTag: '5ec7a2d86fe9f43fdd38d5e254a1117c8a51b4c3',
     toTag: 'fa3788c8c4b3373ef8424ce3eb008a5cd07cc5aa',
+    includeOpen: false,
     failOnError: false,
     commitMode: false,
     configuration
@@ -91,6 +94,7 @@ it('Should match generated changelog and replace all occurrences (refs)', async
     repo: 'release-changelog-builder-action',
     fromTag: '5ec7a2d86fe9f43fdd38d5e254a1117c8a51b4c3',
     toTag: 'fa3788c8c4b3373ef8424ce3eb008a5cd07cc5aa',
+    includeOpen: false,
     failOnError: false,
     commitMode: false,
     configuration
@@ -126,6 +130,7 @@ it('Should match ordered ASC', async () => {
     repo: 'release-changelog-builder-action',
     fromTag: 'v0.3.0',
     toTag: 'v0.5.0',
+    includeOpen: false,
     failOnError: false,
     commitMode: false,
     configuration
@@ -148,6 +153,7 @@ it('Should match ordered DESC', async () => {
     repo: 'release-changelog-builder-action',
     fromTag: 'v0.3.0',
     toTag: 'v0.5.0',
+    includeOpen: false,
     failOnError: false,
     commitMode: false,
     configuration
@@ -170,6 +176,7 @@ it('Should ignore PRs not merged into develop branch', async () => {
     repo: 'release-changelog-builder-action',
     fromTag: 'v1.3.1',
     toTag: 'v1.4.0',
+    includeOpen: false,
     failOnError: false,
     commitMode: false,
     configuration
@@ -190,6 +197,7 @@ it('Should ignore PRs not merged into main branch', async () => {
     repo: 'release-changelog-builder-action',
     fromTag: 'v1.3.1',
     toTag: 'v1.4.0',
+    includeOpen: false,
     failOnError: false,
     commitMode: false,
     configuration