Updating (pre-)release date in docs.

PiperOrigin-RevId: 255917787

Author: przydatek

README.md

@@ -100,7 +100,7 @@ AEAD primitive in Java:
     [Obj-C](docs/OBJC-HOWTO.md), and [Go](docs/GOLANG-HOWTO.md) are field
     tested and ready for production. The latest version is
     [1.3.0-rc1](https://github.com/google/tink/releases/tag/v1.3.0-rc1),
-    released on 2019-06-28.
+    released on 2019-07-01.
 
 *   Tink for Python and JavaScript are in active development.
 

apps/paymentmethodtoken/README.md

@@ -4,7 +4,7 @@
 
 The most recent release is
 [1.3.0-rc1](https://github.com/google/tink/releases/tag/v1.3.0-rc1), released
-2019-06-28. API docs can be found
+2019-07-01. API docs can be found
 [here](https://google.github.com/tink/javadoc/apps-paymentmethodtoken/1.3.0-rc1).
 
 The Maven group ID is `com.google.crypto.tink`, and the artifact ID is

apps/rewardedads/README.md

@@ -7,7 +7,7 @@ AdMob Rewarded Ads.
 
 The most recent release is
 [1.3.0-rc1](https://github.com/google/tink/releases/tag/v1.3.0-rc1), released
-2019-06-28. API docs can be found
+2019-07-01. API docs can be found
 [here](https://google.github.com/tink/javadoc/apps-rewardedads/1.3.0-rc1).
 
 The Maven group ID is `com.google.crypto.tink`, and the artifact ID is

docs/JAVA-HOWTO.md

@@ -17,7 +17,7 @@ Tink can be installed with Maven or Gradle. The Maven group ID is
 
 The most recent release is
 [1.3.0-rc1](https://github.com/google/tink/releases/tag/v1.3.0-rc1), released
-2019-06-28.
+2019-07-01.
 
 Java developers can add Tink using Maven: