Change version to 0.5.2, update docs and README.

PiperOrigin-RevId: 320291036

README.md

@@ -80,9 +80,15 @@ bazel test -c opt $COPT_FLAGS nucleus/...
 
 ## Version
 
-This is Nucleus 0.5.1.  Nucleus follows [semantic
+This is Nucleus 0.5.2.  Nucleus follows [semantic
 versioning](https://semver.org/).
 
+New in 0.5.2:
+
+* Upgrades htslib dependency from 1.9 to 1.10.2.
+* More informative error message for failed SAM header parsing.
+* `util/vis.py` now supports saving images to Google Cloud Storage.
+
 New in 0.5.1:
 
 * Added new utilities for working with DeepVariant pileup images and variant protos.

docs/source/nucleus/util/vis.md

@@ -256,7 +256,10 @@ Make a PNG and show it from a numpy array of dtype=np.uint8.
 
 Args:
   arr: numpy array. Input array to save.
-  path: str. file path at which to save the image.
+  path: str. File path at which to save the image. A .png prefix is added if
+    the path does not already have one. Leave empty to save at /tmp/tmp.png,
+    which is useful when only temporarily showing the image in a Colab
+    notebook.
   image_mode: "RGB" or "L". Leave as default=None to choose based on image
     dimensions.
   show: bool. Whether to display the image using IPython (for notebooks).

nucleus/pip_package/build_pip_package.sh

@@ -28,7 +28,7 @@ set -x
 
 # When changing NUCLEUS_VERSION, be sure to also change it in
 # egg_files/PKG-INFO.
-NUCLEUS_VERSION="0.5.1"
+NUCLEUS_VERSION="0.5.2"
 PACKAGE_NAME="google_nucleus-${NUCLEUS_VERSION}"
 PYTHON_VERSION="3.5"
 

nucleus/pip_package/egg_files/PKG-INFO

@@ -1,6 +1,6 @@
 Metadata-Version: 1.1
 Name: google-nucleus
-Version: 0.5.1
+Version: 0.5.2
 Summary: A library for reading and writing genomics data.
 Home-page: https://github.com/google/nucleus
 Author: The Genomics team in Google Brain