Initiate review of SE-0141: Availability by Swift version

Author: DougGregor

index.xml

@@ -141,6 +141,7 @@
 <proposal id="0138" status="accepted" swift-version="3" name="UnsafeRawBufferPointer" filename="0138-unsaferawbufferpointer.md"/>
 <proposal id="0139" status="accepted" swift-version="3" name="Bridge Numeric Types to `NSNumber` and Cocoa Structs to `NSValue`" filename="0139-bridge-nsnumber-and-nsvalue.md"/>
 <proposal id="0140" status="accepted" swift-version="3" name="Bridge `Optional` As Its Payload Or `NSNull`" filename="0140-bridge-optional-to-nsnull.md"/>
+<proposal id="0141" status="active" swift-version="4" name="Availability by Swift version" filename="0141-available-by-swift-version.md"/>
 
 <!--
 Recognized values for a proposal's status:

proposals/NNNN-available-by-swift-version.md renamed to proposals/0141-available-by-swift-version.md

@@ -1,9 +1,9 @@
 # Availability by Swift version
 
-* Proposal: [SE-NNNN](NNNN-available-by-swift-version.md)
+* Proposal: [SE-0141](0141-available-by-swift-version.md)
 * Authors: [Graydon Hoare](https://github.com/graydon)
-* Review Manager: TBD
-* Status: **Awaiting review**
+* Review Manager: [Doug Gregor](https://github.com/DougGregor)
+* Status: Under review (September 23...28, 2016)
 
 ## Introduction