Fix block generation by updating codec versions in wasm (#810)

* Fixes for staging testnet

* Fix codec versioning

* Comment unneeded trace

* Update lib.rs

* Update parity-codec

* Add script to update wasm deps and update them.

* Update hashes

* Add BBQ Birch testnet

* it's default-features, apparently.

* Use simpler version spec for parity codec

* Typo

substrate/scripts/update.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+# This script assumes that all pre-requisites are installed.
+
+set -e
+
+PROJECT_ROOT=`git rev-parse --show-toplevel`
+source `dirname "$0"`/common.sh
+
+export CARGO_INCREMENTAL=0
+
+# Save current directory.
+pushd .
+
+cd $ROOT
+
+for SRC in "${SRCS[@]}"
+do
+  echo "*** Updating and building wasm binaries in $SRC"
+  cd "$PROJECT_ROOT/$SRC"
+
+  cargo update
+  ./build.sh
+
+  cd - >> /dev/null
+done
+
+# Restore initial directory.
+popd