Update to Deno 0.12

.travis.yml

@@ -1,7 +1,7 @@
 language: python
 
 variables:
-  DENO_VERSION: "v0.10.0"
+  DENO_VERSION: "v0.12.0"
 
 install:
   - curl -L https://deno.land/x/install/install.sh | sh -s $(DENO_VERSION)

deps.ts

@@ -7,11 +7,11 @@ export {
   serve,
   Server,
   ServerRequest
-} from "https://deno.land/std@v0.9.0/http/server.ts";
+} from "https://deno.land/std@v0.12.0/http/server.ts";
 export {
   Status,
   STATUS_TEXT
-} from "https://deno.land/std@v0.9.0/http/http_status.ts";
+} from "https://deno.land/std@v0.12.0/http/http_status.ts";
 export {
   basename,
   extname,
@@ -21,8 +21,8 @@ export {
   parse,
   resolve,
   sep
-} from "https://deno.land/std@v0.9.0/fs/path/mod.ts";
+} from "https://deno.land/std@v0.12.0/fs/path/mod.ts";
 export {
   contentType,
   lookup
-} from "https://deno.land/std@v0.9.0/media_types/mod.ts";
+} from "https://deno.land/std@v0.12.0/media_types/mod.ts";

test_deps.ts

@@ -1,11 +1,11 @@
 // Copyright 2018-2019 the oak authors. All rights reserved. MIT license.
 
-export { test, runTests } from "https://deno.land/std@v0.9.0/testing/mod.ts";
+export { test, runTests } from "https://deno.land/std@v0.12.0/testing/mod.ts";
 
 export {
   assert,
   assertEquals,
   assertStrictEq,
   assertThrows,
   assertThrowsAsync
-} from "https://deno.land/std@v0.9.0/testing/asserts.ts";
+} from "https://deno.land/std@v0.12.0/testing/asserts.ts";