Add chickadee 0.3.0 and guile-sdl2 0.3.1 release announcements.

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+title: Chickadee 0.3.0 released
+date: 2018-10-16 09:00:00
+tags: guile gamedev chickadee
+summary: Chickadee 0.3.0 has been released
+---
+
+I'm happy to announce that Chickadee 0.3.0 has been released!  It has
+been more than a year and a half since the last release so I figured
+it was about time!
+
+Chickadee is a game development toolkit for Guile that is built on top
+of SDL2 and OpenGL.  Chickadee aims to provide all the features that
+parenthetically inclined game developers need to make 2D (and
+eventually 3D) games in Scheme.  Chickadee is *not* a game engine,
+however!
+
+The following features are supported:
+
+  - Generic fixed timestep game loop
+    - Plug in any input/output system!
+  - Built-in SDL + OpenGL game loop implementation
+    - Get started writing games quickly!
+    - 2D/3D rendering engine via OpenGL
+    - Keyboard/mouse/controller input via SDL
+  - High-level OpenGL interface
+    - Sprites
+    - Shapes
+    - Fonts
+    - GLSL shaders
+    - Framebuffers
+    - Tiled maps
+    - Buffer objects and all that low-level goodness
+  - Math
+    - Vectors
+    - Matrices
+    - Quaternions
+    - Axis-aligned bounding boxes
+    - Easing functions
+    - Spatial partitioning
+    - Generic A* path finding algorithm
+  - Scripting
+    - Coroutines
+    - Time-based scheduling
+    - Tweening
+
+Here's a summary of the major changes:
+
+  - Old game loop replaced with generic one that can support any
+    backend
+
+  - SDL + OpenGL game loop included that is similar, but different, to
+    the default game loop in 0.2.0
+
+  - Errors within the game loop can be handled by a user-defined
+    procedure
+
+  - Tweening support added to `(chickadee scripting)` module
+
+  - Quaternions added via `(chickadee math quaternions)` module
+
+  - A* path finding added via `(chickadee math path-finding)` module
+
+  - Tiled map loading and rendering via `(chickadee render tiled)`
+    module
+
+  - Cubic bezier curves added via `(chickadee math bezier)` module
+
+  - Grid-based 2D spatial partitioning added via `(chickadee math grid)`
+    module
+
+  - Better support for systems without OpenGL 3.0 capability
+
+  - Better support for systems without vsync capability
+
+  - Reader syntax for 2D/3D vectors
+
+  - Much more API documentation added to the manual
+
+  - Support for Guile 3.0
+
+tarball: <https://files.dthompson.us/chickadee/chickadee-0.3.0.tar.gz>
+
+signature: <https://files.dthompson.us/chickadee/chickadee-0.3.0.tar.gz.asc>
+
+See the
+[Chickadee project page](https://dthompson.us/projects/chickadee.html)
+for more information.
+
+Bug reports, bug fixes, feature requests, and patches are welcomed.
+
+Happy hacking!
diff --git a/posts/2018-10-16-guile-sdl2-0.3.1-released.md b/posts/2018-10-16-guile-sdl2-0.3.1-released.md
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+title: Guile-SDL2 0.3.1 released
+date: 2018-10-16 09:01:00
+tags: guile gamedev guile-sdl2
+summary: Guile-SDL2 0.3.1 has been released
+---
+
+I'm happy to announce that Guile-SDL2 0.3.1 has been released!  This
+is a simple maintenance release that adds support for the upcoming
+Guile 3.0 featuring JIT compilation.  However, one new SDL2 binding
+has snuck in.  Thanks to Eero Leno for wrapping the
+`SDL_SetRenderDrawColor` function!
+
+tarball: <https://files.dthompson.us/guile-sdl2/guile-sdl2-0.3.1.tar.gz>
+
+signature: <https://files.dthompson.us/guile-sdl2/guile-sdl2-0.3.1.tar.gz.asc>
+
+See the
+[Guile-SDL2 project page](https://dthompson.us/projects/guile-sdl2.html)
+for more information.
+
+Bug reports, bug fixes, feature requests, and patches are welcomed.
+
+Happy hacking!