re-enable web samples, fix various issues (#156)

* update peanut.yaml, slide_puzzle pubspec

* add data to web/ directory

* define github_data as an asset

* add preview image

web/github_dataviz/lib/main.dart

@@ -182,7 +182,7 @@ class _MainLayoutState extends State<MainLayout> with TickerProviderStateMixin {
 
   Future loadGitHubData() async {
     String contributorsJsonStr =
-        (await http.get("github_data/contributors.json")).body;
+        (await http.get("assets/github_data/contributors.json")).body;
     List jsonObjs = jsonDecode(contributorsJsonStr) as List;
     List<UserContribution> contributionList =
         jsonObjs.map((e) => UserContribution.fromJson(e)).toList();
@@ -191,25 +191,25 @@ class _MainLayoutState extends State<MainLayout> with TickerProviderStateMixin {
 
     int numWeeksTotal = contributionList[0].contributions.length;
 
-    String starsByWeekStr = (await http.get("github_data/stars.tsv")).body;
+    String starsByWeekStr = (await http.get("assets/github_data/stars.tsv")).body;
     List<StatForWeek> starsByWeekLoaded =
         summarizeWeeksFromTSV(starsByWeekStr, numWeeksTotal);
 
-    String forksByWeekStr = (await http.get("github_data/forks.tsv")).body;
+    String forksByWeekStr = (await http.get("assets/github_data/forks.tsv")).body;
     List<StatForWeek> forksByWeekLoaded =
         summarizeWeeksFromTSV(forksByWeekStr, numWeeksTotal);
 
-    String commitsByWeekStr = (await http.get("github_data/commits.tsv")).body;
+    String commitsByWeekStr = (await http.get("assets/github_data/commits.tsv")).body;
     List<StatForWeek> commitsByWeekLoaded =
         summarizeWeeksFromTSV(commitsByWeekStr, numWeeksTotal);
 
     String commentsByWeekStr =
-        (await http.get("github_data/comments.tsv")).body;
+        (await http.get("assets/github_data/comments.tsv")).body;
     List<StatForWeek> commentsByWeekLoaded =
         summarizeWeeksFromTSV(commentsByWeekStr, numWeeksTotal);
 
     String pullRequestActivityByWeekStr =
-        (await http.get("github_data/pull_requests.tsv")).body;
+        (await http.get("assets/github_data/pull_requests.tsv")).body;
     List<StatForWeek> pullRequestActivityByWeekLoaded =
         summarizeWeeksFromTSV(pullRequestActivityByWeekStr, numWeeksTotal);
 

web/github_dataviz/pubspec.yaml

@@ -11,3 +11,4 @@ dependencies:
 flutter:
   assets:
     - preview.png
+    - github_data/

web/peanut.yaml

@@ -2,11 +2,10 @@
 
 directories:
 - charts/web
-# package:http doesn't work yet: https://github.com/flutter/flutter/issues/34858
-#- dad_jokes/web
-#- filipino_cuisine/web
+- dad_jokes/web
+- filipino_cuisine/web
 - gallery/web
-#- github_dataviz/web
+- github_dataviz/web
 - particle_background/web
 - slide_puzzle/web
 - spinning_square/web

web/slide_puzzle/pubspec.lock

@@ -63,7 +63,7 @@ packages:
       name: crypto
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.2"
+    version: "2.1.3"
   csslib:
     dependency: transitive
     description: