[Release] update version (#440)

* update version

* update news

NEWS.md

@@ -3,6 +3,49 @@ DGL release and change logs
 
 Refer to the roadmap issue for the on-going versions and features.
 
+0.2
+---
+Major release that includes many features, bugfix and performance improvement.
+Speed of GCN model on Pubmed dataset has been improved by **4.19x**! Speed of
+RGCN model on Mutag dataset has been improved by **7.35x**! Important new
+feature: **graph sampling APIs**.
+
+Update details:
+
+# Model examples
+- [x] TreeLSTM w/ MXNet (PR #279 by @szha )
+- [x] GraphSage (@ZiyueHuang )
+- [x] Improve GAT model speed (PR #348 by @jermainewang )
+
+# Core system improvement
+- [x] Immutable CSR graph structure (PR #342 by @zheng-da )
+  - [x] Finish remaining functionality (Issue #369, PR #404 by @yzh119)
+- [x] Nodeflow data structure (PR #361 by @zheng-da )
+- [x] Neighbor sampler (PR #322 )
+- [x] Layer-wise sampler (PR #362 by @GaiYu0 )
+- [x] Multi-GPU support by data parallelism (PR #356 #338 by @ylfdq1118 )
+- [x] More dataset:
+  - [x] Reddit dataset loader (PR #372 by @ZiyueHuang )
+  - [x] PPI dataset loader (PR #395 by @sufeidechabei )
+  - [x] Mini graph classification dataset (PR #364 by @mufeili )
+- [x] NN modules (PR #406 by @jermainewang @mufeili)
+  - [x] GraphConv layer
+  - [x] Edge softmax layer
+- [x] Edge group apply API (PR #358 by @VoVAllen )
+- [x] Reversed graph and transform.py module (PR #331 by @mufeili )
+- [x] Max readout (PR #341 by @mufeili )
+- [x] Random walk APIs (PR #392 by @BarclayII )
+
+# Tutorial/Blog
+- [x] Batched graph classification in DGL (PR #360 by @mufeili )
+- [x] Understanding GAT (@sufeidechabei )
+
+# Project improvement
+- [x] Python lint check (PR #330 by @jermainewang )
+- [x] Win CI (PR #324 by @BarclayII )
+- [x] Auto doc build (by @VoVAllen )
+- [x] Unify tests for different backends (PR #333 by @BarclayII )
+
 0.1.3
 -----
 Bug fix

conda/dgl/meta.yaml

 package:
   name: dgl
-  version: "0.1.3"
+  version: "0.2"
 
 source:
   git_rev: 0.1.x

include/dgl/runtime/c_runtime_api.h

@@ -33,7 +33,7 @@
 #endif
 
 // DGL version
-#define DGL_VERSION "0.1.3"
+#define DGL_VERSION "0.2"
 
 
 // DGL Runtime is DLPack compatible.

python/dgl/_ffi/libinfo.py

@@ -87,4 +87,4 @@ def find_lib_path(name=None, search_path=None, optional=False):
 # We use the version of the incoming release for code
 # that is under development.
 # The following line is set by dgl/python/update_version.py
-__version__ = "0.1.3"
+__version__ = "0.2"

python/update_version.py

@@ -11,7 +11,7 @@ import re
 # current version
 # We use the version of the incoming release for code
 # that is under development
-__version__ = "0.1.3"
+__version__ = "0.2"
 
 # Implementations
 def update(file_name, pattern, repl):