doc: updated changelog for 2020.06.

doc/python/pages/changelog.rst

@@ -32,12 +32,33 @@ Changelog
 :some_directive: TODO: why can't the title below "just work" and I have to
     add some bogus content before?
 
-`Changes since 2019.10`_
-========================
+`2020.06`_
+==========
+
+Released 2020-06-27, tagged as
+:gh:`v2020.06 <mosra/magnum-bindings/releases/tag/v2020.06>`.
 
 -   Exposed `Matrix4.cofactor()`, `Matrix4.comatrix()`, `Matrix4.adjugate()`
     (and equivalents in other matrix sizes), and `Matrix4.normal_matrix()`
 -   Exposed `gl.AbstractFramebuffer.blit()` functions and related enums
+-   Exposed more keys in `platform.sdl2.Application` and
+    `platform.glfw.Application`
+-   Exposed `gl.AbstractTexture.unbind()`
+-   Exposed `trade.AbstractImporter.image2d_level_count()` and related APIs for
+    1D and 3D
+-   Exposed `trade.MeshData` and related APIs, the previous
+    ``trade.MeshData3D`` APIs are removed
+-   Exposed new APIs and tangent support in the `primitives` library
+-   `platform.sdl2.Application` and `platform.glfw.Application` now provide a
+    clear error instead of "pure virtual method call" in case ``draw_event()``
+    is not implemented
+-   Library version is now exposed through ``MAGNUMBINDINGS_VERSION_YEAR``,
+    ``MAGNUMBINDINGS_VERSION_MONTH``, ``MAGNUMBINDINGS_VERSION_COMMIT``,
+    ``MAGNUMBINDINGS_VERSION_HASH`` and ``MAGNUMBINDINGS_VERSION_STRING``
+    preprocessor defines in a new ``Magnum/versionBindings.h`` header. This
+    header is not included by any other header to avoid trigerring a full
+    rebuild when Git commit changes. If Git is not found, only the first two
+    defines are present.
 
 `2019.10`_
 ==========