v1.2.0-beta.1

Update to Electron 1.7.10 (#1919)

Fix issue where clicking Windows notification breaks window out of
aero-snap location (#1918)

Fix issue where old log data would persist in logs dir (#1945)

Fix issue where disabled send field (in the middle of send) could be
edited after click (#1937)

Update strings (#1921)

Dev:
  - Fix error to console when verifying contact in standalone mode
    (#1961)
  - Remove all built assets from repo (#1955)
  - Log out information from DOMException when import fails (#1923)
  - Log clearer messages regarding prekey/signed prekey fetches (#1961)
  - Make errors more debuggable; capture correct stack, include name
    (#1944)
  - Add eslint/mocha with code coverage for non-browser code (#1945)
  - Revamped github issue and pull request templates, updates to
    contributing.md/readme.md (#1955 and #1956)
  - Document building/testing releases in Contributing.md,
    thanks @veggiedefender (#1867)
  - Update a number of dependencies to the latest: builder, websocket,
    spellcheck (#1920)

package.json

@@ -3,7 +3,7 @@
   "productName": "Signal",
   "description": "Private messaging from your desktop",
   "repository": "https://github.com/WhisperSystems/Signal-Desktop.git",
-  "version": "1.1.0",
+  "version": "1.2.0-beta.1",
   "license": "GPL-3.0",
   "author": {
     "name": "Open Whisper Systems",