Update changelog and add credit

Related to #2327

CONTRIBUTORS.md

@@ -213,6 +213,7 @@ video tutorials.
  - Matt Sealey
  - Steve Sexton
  - Arkady Shapkin
+ - Mingjie Shen
  - Ali Sherief
  - Yoshiki Shibukawa
  - Dmitri Shuralyov

README.md

@@ -184,6 +184,7 @@ information on what to include when reporting a bug.
  - Bugfix: `glfwSetGammaRamp` could emit `GLFW_INVALID_VALUE` before initialization
  - Bugfix: `glfwGetJoystickUserPointer` returned `NULL` during disconnection (#2092)
  - Bugfix: `glfwGetKeyScancode` returned `0` on error when initialized instead of `-1`
+ - Bugfix: Failure to make a newly created context current could cause segfault (#2327)
  - [Win32] Added the `GLFW_WIN32_KEYBOARD_MENU` window hint for enabling access
            to the window menu
  - [Win32] Added a version info resource to the GLFW DLL