Update to Bootstrap v4.3.1

.editorconfig

@@ -4,7 +4,7 @@ root = true
 [*]
 charset = utf-8
 indent_style = space
-indent_size = 2
+indent_size = 4
 insert_final_newline = true
 trim_trailing_whitespace = true
 

.gitignore

@@ -4,6 +4,7 @@
 /dist
 /tmp
 /out-tsc
+.npmrc
 
 # dependencies
 /node_modules
@@ -23,6 +24,12 @@
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
+*.csproj
+.vs/
+bin/
+obj/
+*.DotSettings.user
+*.DotSettings
 
 # misc
 /.sass-cache
@@ -33,6 +40,7 @@ npm-debug.log
 yarn-error.log
 testem.log
 /typings
+*.orig
 
 # System Files
 .DS_Store