Update changelog

Signed-off-by: James Valleroy <jvalleroy@mailbox.org>

debian/changelog

@@ -1,3 +1,42 @@
+plinth (0.19.0) UNRELEASED; urgency=medium
+
+  [ James Valleroy ]
+  * users: Use own copy of ldapscripts config
+  * users: Handle upgrade for ldapscripts config
+  * vagrant: Avoid debconf prompts while provisioning
+
+  [ John McCann ]
+  * ejabberd: Use dynamic reload after enabling/disabling MAM
+
+  [ Joseph Nuthalapati ]
+  * Add framework for user groups per application
+  * groups: User permissions for access to apps based on LDAP groups
+  * Fixes for user groups
+  * Fix failing root tests
+  * Suppress unnecessary logging in cfg tests
+  * users: tests: restore previous value of restricted access
+  * snapshots: Button to delete all snapshots
+  * snapshots: Minor refactoring
+  * manual: Make manual available as a PDF download
+  * manual: Download can serve either pdf or pdf.gz file
+
+  [ Sunil Mohan Adapa ]
+  * Update yapf configuration for simplicity
+  * Update HACKING file about coding standard tools
+  * clients: Minor styling fixes
+  * clients: Update icons to be 32x32 consistently
+  * api: Update for clarity (API breaking change)
+  * clients: Cleanup framework
+  * clients: Update all manifest due to use updated framework
+  * users: Add a note about using separate first setup action
+  * help: Don't uncompress the PDF manual
+
+  [ Hanisha P ]
+  * minetest: Show domain information for users to connect to minetest
+  * Option to enable/disble automatic timeline snapshots
+
+ -- James Valleroy <jvalleroy@mailbox.org>  Mon, 18 Dec 2017 16:34:40 -0500
+
 plinth (0.18.1) unstable; urgency=high
 
   * Re-upload with higher urgency (to unblock django-axes 3.0.3).