README: drop WIP-warnings

The renderer no longer has any abort() code paths, and the API version
indicator is now stable on git master. Hooray!

README.md

@@ -15,16 +15,6 @@ accomplish the following goals:
   redesigned abstractions. (Basically, I wanted to eliminate code smell like
   `shader_cache.c` and totally redesign `gpu/video.c`)
 
-**NOTE**: libplacebo is currently in a relatively early stage. To reflect
-this, the API version as exported by common.h will **NOT** change except on
-new beta releases (v0.x). So using libplacebo directly from git master is not
-advised; always use one of the tagged releases if you want to play around with
-libplacebo in its current stage.
-
-Once the version number hits 1.X, which will mark the first stable release,
-the API version will be bumped for every change to the public API - even
-changes that happen on git master.
-
 ## Authors
 
 libplacebo's main developer is Niklas Haas
@@ -151,10 +141,6 @@ algorithms depending on the hardware's capabilities, combining the correct
 sequence of colorspace transformations and shader passes in order to get the
 best overall image quality, and so forth.
 
-**WARNING**: The `renderer.h` is a WIP component and currently doesn't support
-the full advertised featureset yet. If you trigger any unimplemented paths, it
-will abort(). Use at your own risk.
-
 ## Installing
 
 ### Gentoo