v1.4.0-beta.1

Update electron to 1.7.12 (#2029)

Fixed: incoming messages sometimes didn't appear at all (#2050)

Fixed: 'Cannot find module ./app/locale' error popup when attempting to
start another instance of the app on Windows (#2017)

Fixed: Setting NODE_ENV environment variable to 'development' would
point it at staging servers (#2010)

'Restart' -> 'Restart Signal' button in update dialog, thanks @StevenXL
(#2024)

Set conversation disappearing messages state and contact block state on
initial link (#1980)

Dev:
  - Update to libsignal-protocol-javascript v1.3.0 (#2050)
  - Make our binary comparisons constant time (#2047)
  - Fix typo in issue template (#2020)
  - Update to new signal branding (#2018)

package.json

@@ -3,7 +3,7 @@
   "productName": "Signal",
   "description": "Private messaging from your desktop",
   "repository": "https://github.com/signalapp/Signal-Desktop.git",
-  "version": "1.3.0-beta.1",
+  "version": "1.4.0-beta.1",
   "license": "GPL-3.0",
   "author": {
     "name": "Open Whisper Systems",