chore(*): release 3.12.0 (#235)

README.md

@@ -16,7 +16,7 @@
 About
 -----
 
-- **Important**: This is Lean 3.11.0c, 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 3.12.0c, 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).
 - [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)

doc/changes.md

@@ -1,3 +1,19 @@
+v3.12.0c (14 May 2020)
+----------------------
+
+Features:
+  - Tactic combinators with informative results (#212)
+  - `has_singleton` is a new typeclass (#217)
+  - Add instances for `has_repr name`, `has_repr case_tag`, and `has_to_format case_tag` (#230)
+
+Changes:
+  - `library/init/function`: use dot notation, add some docstrings (#216)
+  - `tactic.all_goals` is now called `tactic.all_goals'`, etc. (#212)
+  - `norm_num` is removed (#224)
+  - Parse `{a,b,c}` as right associative (#153)
+  - Refactor case tags (#228)
+  - Enable `pp.generalized_field_notation` by default (#227)
+
 v3.11.0c (8 May 2020)
 ---------------------
 

src/CMakeLists.txt

@@ -4,7 +4,7 @@ if ((${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 3.1) OR (${CMAKE_MAJO
 endif()
 project(LEAN CXX C)
 set(LEAN_VERSION_MAJOR 3)
-set(LEAN_VERSION_MINOR 11)
+set(LEAN_VERSION_MINOR 12)
 set(LEAN_VERSION_PATCH 0)
 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'")