Updates version number to 0.4.309070746.20200429.

Significant changes:
- Improved error reporting in Xcode when a test or test_suite
  target is interrupted during a build.

PiperOrigin-RevId: 309072269
diff --git a/version.bzl b/version.bzl
index 487a5f5..8494cb7 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 = "306894614"
+TULSI_VERSION_FIXLEVEL = "309070746"
 
-TULSI_VERSION_DATE = "20200416"
+TULSI_VERSION_DATE = "20200429"
 
 TULSI_VERSION_COPYRIGHT = "2015-2018"