doc: updated credits and changelog.

doc/changelog.dox

@@ -524,6 +524,8 @@ See also:
     @ref Platform::WindowlessWglApplication, driver detection for the
     @cpp "no-forward-compatible-core-context" @ce now properly handles
     @fn_gl{GetString} returning a @cpp nullptr @ce
+-   @ref GL::Texture::imageSize() was present on WebGL 2 by mistake (see
+    [mosra/magnum#365](https://github.com/mosra/magnum/pull/365))
 
 @subsection changelog-latest-docs Documentation
 

doc/credits.dox

@@ -139,6 +139,8 @@ Are the below lists missing your name or something's wrong?
     fixes
 -   **Leon Moctezuma** ([\@leonidax](https://github.com/leonidax)) ---
     bugreports, API design direction
+-   **Mandeep Singh Baines** ([\@msbaines](https://github.com/msbaines)) ---
+    WebGL 2 build fixes
 -   **Max Schwarz** ([\@xqms](https://github.com/xqms)) --- `Any*` plugin
     improvements, fixes in the @ref GL library
 -   **Michael Tao** ([\@mtao](https://github.com/mtao)) --- Gentoo build fixes