Updates version number to 0.4.233828679.20190213.

Significant changes:
- Swapped to use Xcode 10's new build system.

PiperOrigin-RevId: 233833318
diff --git a/version.bzl b/version.bzl
index e058280..9b49472 100644
--- a/version.bzl
+++ b/version.bzl
@@ -4,9 +4,9 @@
 # Version number (recorded into the Info.plist)
 TULSI_VERSION_MAJOR = "0"
 
-TULSI_VERSION_FIXLEVEL = "232889052"
+TULSI_VERSION_FIXLEVEL = "233828679"
 
-TULSI_VERSION_DATE = "20190207"
+TULSI_VERSION_DATE = "20190213"
 
 TULSI_VERSION_COPYRIGHT = "2015-2018"