Update changelog format

.chglog/CHANGELOG.tpl.md

@@ -27,7 +27,7 @@ Notable changes to Mailpit will be documented in this file.
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-{{ end }}
+{{ end -}}
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CHANGELOG.md

@@ -3,6 +3,20 @@
 Notable changes to Mailpit will be documented in this file.
 
 
+## 1.0.0-beta1
+
+### BREAKING CHANGE
+
+This release includes a major backend storage change (SQLite) that will render any previously-saved messages useless. Please delete old data to free up space. For more information see https://github.com/axllent/mailpit/issues/10
+
+
+### Feature
+- Switch backend storage to use SQLite
+
+### UI
+- Resize preview iframe on load
+
+
 ## 0.1.5
 
 ### Feature
@@ -38,9 +52,6 @@ Notable changes to Mailpit will be documented in this file.
 - Update pagination values when new mail arrives when not on first page
 
 
-### Pull Requests
-- Merge pull request [#6](https://github.com/axllent/mailpit/issues/6) from KaptinLin/develop
-
 ## 0.1.2
 
 ### Feature
@@ -132,3 +143,4 @@ Notable changes to Mailpit will be documented in this file.
 - Unread statistics
 
 
+