Upgrade CodeChain SDK to 0.1.0-alpha.9

The getBlockNumber() method was renamed to getBestBlockNumber() in the latest
SDK, and it caused `Method not found` error during the synchronization
with the CodeChain. This commit upgrades the CodeChain SDK version to the
latest one and fixes the issue.

Author: buo

package.json

@@ -17,7 +17,7 @@
         "bootstrap": "^4.1.1",
         "case-sensitive-paths-webpack-plugin": "2.1.1",
         "chalk": "1.1.3",
-        "codechain-sdk": "^0.1.0-alpha.7",
+        "codechain-sdk": "^0.1.0-alpha.9",
         "config": "^1.30.0",
         "cors": "^2.8.4",
         "css-loader": "0.28.7",

worker/CodeChainAgent.ts

@@ -7,7 +7,7 @@ export class CodeChainAgent {
     }
 
     public getLastBlockNumber = async (): Promise<number> => {
-        return this.sdk.getBlockNumber();
+        return this.sdk.getBestBlockNumber();
     }
 
     public getBlock = async (blockNumber): Promise<Block> => {

yarn.lock

@@ -1637,9 +1637,9 @@ code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
 
-codechain-sdk@^0.1.0-alpha.7:
-  version "0.1.0-alpha.7"
-  resolved "https://registry.yarnpkg.com/codechain-sdk/-/codechain-sdk-0.1.0-alpha.7.tgz#2e5e1cb8ab23132b1df44acafef750da3cdaea06"
+codechain-sdk@^0.1.0-alpha.9:
+  version "0.1.0-alpha.9"
+  resolved "https://registry.yarnpkg.com/codechain-sdk/-/codechain-sdk-0.1.0-alpha.9.tgz#457bebea47672b7678718e56d6572bb00c46e340"
   dependencies:
     bignumber.js "^6.0.0"
     blakejs "^1.1.0"
@@ -1699,10 +1699,14 @@ combined-stream@1.0.6, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@2.15.x, commander@^2.12.1, commander@^2.12.2, commander@~2.15.0:
+commander@2.15.x, commander@^2.12.1, commander@~2.15.0:
   version "2.15.1"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
 
+commander@^2.12.2:
+  version "2.16.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.16.0.tgz#f16390593996ceb4f3eeb020b31d78528f7f8a50"
+
 commander@~2.13.0:
   version "2.13.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.13.0.tgz#6964bca67685df7c1f1430c584f07d7597885b9c"
@@ -3260,8 +3264,8 @@ hash-base@^3.0.0:
     safe-buffer "^5.0.1"
 
 hash.js@^1.0.0, hash.js@^1.0.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.3.tgz#340dedbe6290187151c1ea1d777a3448935df846"
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.4.tgz#8b50e1f35d51bd01e5ed9ece4dbe3549ccfa0a3c"
   dependencies:
     inherits "^2.0.3"
     minimalistic-assert "^1.0.0"
@@ -6352,8 +6356,10 @@ ripemd160@^2.0.0, ripemd160@^2.0.1, ripemd160@^2.0.2:
     inherits "^2.0.1"
 
 rlp@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/rlp/-/rlp-2.0.0.tgz#9db384ff4b89a8f61563d92395d8625b18f3afb0"
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/rlp/-/rlp-2.1.0.tgz#e4f9886d5a982174f314543831e36e1a658460f9"
+  dependencies:
+    safe-buffer "^5.1.1"
 
 rsvp@^3.3.3:
   version "3.6.2"
@@ -7463,10 +7469,14 @@ uuid@^2.0.2:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-2.0.3.tgz#67e2e863797215530dff318e5bf9dcebfd47b21a"
 
-uuid@^3.1.0, uuid@^3.2.1:
+uuid@^3.1.0:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.2.1.tgz#12c528bb9d58d0b9265d9a2f6f0fe8be17ff1f14"
 
+uuid@^3.2.1:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.2.tgz#1b4af4955eb3077c501c23872fc6513811587131"
+
 validate-npm-package-license@^3.0.1:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.3.tgz#81643bcbef1bdfecd4623793dc4648948ba98338"