Merge pull request #956 from HorizenOfficial/pc/090_docs

0.9.0 changelog and release notes updates

CHANGELOG.md

@@ -1,8 +1,12 @@
 **0.9.0**
-1. libevm dependency updated to 1.0.0-SNAPSHOT.
+1. libevm dependency updated to 1.0.0.
 2. Added support for EVM and native smart contracts interoperability.
-3. Sparkz dependency updated to 2.2.0
-4. Improved storage versioning
+3. Sparkz dependency updated to 2.2.0.
+4. Improved storage versioning (fullsynch time reduced by 5x)
+5. Minor fixes:
+    * [eth RPC endpoint] debug_traceCall now returns a more accurate error response for reverted transactions 
+    * [eth RPC endpoint] debug_traceCall and debug_traceTransaction now return a correct value for the gasUsed field when topmost call is a call to a Solidity Smart Contract function.
+    * Certificates older than 4 epochs are now deleted from the storage only if more recent certificates appeared.
 
 **0.8.1**
 1. Improved precision of eth_gasPrice RPC call

doc/index.md

@@ -1,4 +1,6 @@
 # Horizen Sidechain SDK Release Notes
 
+## Version [0.9.0](/doc/release/0.9.0.md) 
+## Version [0.8.1](/doc/release/0.8.1.md) 
 ## Version [0.8.0](/doc/release/0.8.0.md) 
-## Version [0.9.0](/doc/release/0.9.0.md) 
+

doc/release/0.8.1.md

@@ -0,0 +1,13 @@
+# Release notes - version 0.8.1
+
+---
+
+## Notes about new/updated Features
+
+eth RPC call eth_gasPrice  now returns an estimation of the gasPrice more accurate.\
+The previous one was overestimating the minimum gasPrice needed in some corner cases.\
+Following the new endpoint estimation, will be possible to pay lower average fees than before.\
+The update will be immediately visible, not requirying an hardfork activation.
+
+---
+Full [Changelog](/CHANGELOG.md) file here