chore(*): release 3.13.1 (#246)

README.md

@@ -16,7 +16,7 @@
 About
 -----
 
-- **Important**: This is Lean 3.13.0c, a fork of Lean 3 maintained and updated by the Lean community. The last official release of Lean 3.x was Lean 3.4.2, which can be found [here](https://github.com/leanprover/lean). The Lean developers are currently developing [Lean 4](https://github.com/leanprover/lean4).
+- **Important**: This is Lean 3.13.1c, a fork of Lean 3 maintained and updated by the Lean community. The last official release of Lean 3.x was Lean 3.4.2, which can be found [here](https://github.com/leanprover/lean). The Lean developers are currently developing [Lean 4](https://github.com/leanprover/lean4).
 - [Lean Homepage](http://leanprover.github.io)
 - [Lean Prover Community Homepage](https://leanprover-community.github.io)
 - [Theorem Proving in Lean](https://leanprover.github.io/theorem_proving_in_lean/index.html)
@@ -29,7 +29,7 @@ Installation
 
 The recommended way to install Lean is following [these instructions](https://github.com/leanprover-community/mathlib#installation).
 
-Stable binary releases of Lean are available on the [release page](https://github.com/leanprover-community/lean/releases). 
+Stable binary releases of Lean are available on the [release page](https://github.com/leanprover-community/lean/releases).
 Nightly binary releases are available on the [nightly release page](https://github.com/leanprover-community/lean-nightly/releases).
 For building Lean from source, see the [build instructions](doc/make/index.md).
 

doc/changes.md

@@ -1,3 +1,9 @@
+v3.13.1c (17 May 2020)
+----------------------
+
+Fixes:
+ - Protect and rename some `nat` and `int` lemmas that are superseded in mathlib (#229)
+
 v3.13.0c (16 May 2020)
 ----------------------
 
@@ -87,7 +93,7 @@ Bug fixes:
 Changes:
   - The performance of `array.map` has been greatly improved (#186)
   - A frequently-violated assertion was removed from the elaborator (#194)
-    
+
 v3.8.0c (9 April 2020)
 ----------------------
 
@@ -142,7 +148,7 @@ Changes:
   - Type class resolution solves instance arguments from right-to-left (#139)
   - Type class resolution skips assigned metavariables (#135)
   - Signature of `has_attribute` and `copy_attribute` has changed (#66)
-  
+
 v3.6.1c (2 Mar 2020)
 --------------------
 

src/CMakeLists.txt

@@ -5,7 +5,7 @@ endif()
 project(LEAN CXX C)
 set(LEAN_VERSION_MAJOR 3)
 set(LEAN_VERSION_MINOR 13)
-set(LEAN_VERSION_PATCH 0)
+set(LEAN_VERSION_PATCH 1)
 set(LEAN_VERSION_IS_RELEASE 1)  # This number is 1 in the release revision, and 0 otherwise.
 set(LEAN_SPECIAL_VERSION_DESC "" CACHE STRING "Additional version description like 'nightly-2018-03-11'")
 set(LEAN_VERSION_STRING "${LEAN_VERSION_MAJOR}.${LEAN_VERSION_MINOR}.${LEAN_VERSION_PATCH}")