diff --git a/Gemfile.lock b/Gemfile.lock
index 9c2aca4be..b09161295 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,9 +45,9 @@ GEM
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    active_model_serializers (0.10.9)
-      actionpack (>= 4.1, < 6)
-      activemodel (>= 4.1, < 6)
+    active_model_serializers (0.10.10)
+      actionpack (>= 4.1, < 6.1)
+      activemodel (>= 4.1, < 6.1)
       case_transform (>= 0.2)
       jsonapi-renderer (>= 0.1.1.beta1, < 0.3)
     active_record_query_trace (1.6.2)
@@ -306,7 +306,7 @@ GEM
       json-ld (~> 3.0)
       multi_json (~> 1.12)
       rdf (~> 3.0)
-    jsonapi-renderer (0.2.0)
+    jsonapi-renderer (0.2.2)
     jwt (2.1.0)
     kaminari (1.1.1)
       activesupport (>= 4.1.0)
diff --git a/app/controllers/api/v1/instances_controller.rb b/app/controllers/api/v1/instances_controller.rb
index b68c78615..93e4f0003 100644
--- a/app/controllers/api/v1/instances_controller.rb
+++ b/app/controllers/api/v1/instances_controller.rb
@@ -6,6 +6,6 @@ class Api::V1::InstancesController < Api::BaseController
 
   def show
     expires_in 3.minutes, public: true
-    render_with_cache json: {}, serializer: REST::InstanceSerializer
+    render_with_cache json: {}, serializer: REST::InstanceSerializer, root: 'instance'
   end
 end
diff --git a/app/controllers/manifests_controller.rb b/app/controllers/manifests_controller.rb
index 1e5db4393..491cde745 100644
--- a/app/controllers/manifests_controller.rb
+++ b/app/controllers/manifests_controller.rb
@@ -5,6 +5,6 @@ class ManifestsController < ApplicationController
 
   def show
     expires_in 3.minutes, public: true
-    render json: InstancePresenter.new, serializer: ManifestSerializer
+    render json: InstancePresenter.new, serializer: ManifestSerializer, root: 'instance'
   end
 end
diff --git a/app/controllers/well_known/keybase_proof_config_controller.rb b/app/controllers/well_known/keybase_proof_config_controller.rb
index c78683a8d..03232df2d 100644
--- a/app/controllers/well_known/keybase_proof_config_controller.rb
+++ b/app/controllers/well_known/keybase_proof_config_controller.rb
@@ -5,7 +5,7 @@ module WellKnown
     before_action :check_enabled
 
     def show
-      render json: {}, serializer: ProofProvider::Keybase::ConfigSerializer
+      render json: {}, serializer: ProofProvider::Keybase::ConfigSerializer, root: 'keybase_config'
     end
 
     private
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index 1ff0b234e..4d0adc229 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -2015,6 +2015,10 @@ a.account__display-name {
 
   .scrollable {
     overflow: visible;
+
+    @supports(display: grid) {
+      contain: content;
+    }
   }
 
   @media screen and (min-width: $no-gap-breakpoint) {
diff --git a/app/validators/unique_username_validator.rb b/app/validators/unique_username_validator.rb
index fb67105dd..4e24e3f5f 100644
--- a/app/validators/unique_username_validator.rb
+++ b/app/validators/unique_username_validator.rb
@@ -1,10 +1,12 @@
 # frozen_string_literal: true
 
+# See also: USERNAME_RE in the Account class
+
 class UniqueUsernameValidator < ActiveModel::Validator
   def validate(account)
     return if account.username.nil?
 
-    normalized_username = account.username.downcase.delete('.')
+    normalized_username = account.username.downcase
 
     scope = Account.where(domain: nil).where('lower(username) = ?', normalized_username)
     scope = scope.where.not(id: account.id) if account.persisted?
diff --git a/config/webpack/rules/css.js b/config/webpack/rules/css.js
index f9b87de9b..2b7b7017c 100644
--- a/config/webpack/rules/css.js
+++ b/config/webpack/rules/css.js
@@ -9,7 +9,6 @@ module.exports = {
       options: {
         sourceMap: true,
         importLoaders: 2,
-        localIdentName: '[name]__[local]___[hash:base64:5]',
       },
     },
     {
diff --git a/db/migrate/20170918125918_ids_to_bigints.rb b/db/migrate/20170918125918_ids_to_bigints.rb
index c6feed8f9..8e19468db 100644
--- a/db/migrate/20170918125918_ids_to_bigints.rb
+++ b/db/migrate/20170918125918_ids_to_bigints.rb
@@ -5,70 +5,70 @@ class IdsToBigints < ActiveRecord::Migration[5.1]
 
   disable_ddl_transaction!
 
-  INCLUDED_COLUMNS = [
-    [:account_domain_blocks, :account_id],
-    [:account_domain_blocks, :id],
-    [:accounts, :id],
-    [:blocks, :account_id],
-    [:blocks, :id],
-    [:blocks, :target_account_id],
-    [:conversation_mutes, :account_id],
-    [:conversation_mutes, :id],
-    [:domain_blocks, :id],
-    [:favourites, :account_id],
-    [:favourites, :id],
-    [:favourites, :status_id],
-    [:follow_requests, :account_id],
-    [:follow_requests, :id],
-    [:follow_requests, :target_account_id],
-    [:follows, :account_id],
-    [:follows, :id],
-    [:follows, :target_account_id],
-    [:imports, :account_id],
-    [:imports, :id],
-    [:media_attachments, :account_id],
-    [:media_attachments, :id],
-    [:mentions, :account_id],
-    [:mentions, :id],
-    [:mutes, :account_id],
-    [:mutes, :id],
-    [:mutes, :target_account_id],
-    [:notifications, :account_id],
-    [:notifications, :from_account_id],
-    [:notifications, :id],
-    [:oauth_access_grants, :application_id],
-    [:oauth_access_grants, :id],
-    [:oauth_access_grants, :resource_owner_id],
-    [:oauth_access_tokens, :application_id],
-    [:oauth_access_tokens, :id],
-    [:oauth_access_tokens, :resource_owner_id],
-    [:oauth_applications, :id],
-    [:oauth_applications, :owner_id],
-    [:reports, :account_id],
-    [:reports, :action_taken_by_account_id],
-    [:reports, :id],
-    [:reports, :target_account_id],
-    [:session_activations, :access_token_id],
-    [:session_activations, :user_id],
-    [:session_activations, :web_push_subscription_id],
-    [:settings, :id],
-    [:settings, :thing_id],
-    [:statuses, :account_id],
-    [:statuses, :application_id],
-    [:statuses, :in_reply_to_account_id],
-    [:stream_entries, :account_id],
-    [:stream_entries, :id],
-    [:subscriptions, :account_id],
-    [:subscriptions, :id],
-    [:tags, :id],
-    [:users, :account_id],
-    [:users, :id],
-    [:web_settings, :id],
-    [:web_settings, :user_id],
-  ]
-  INCLUDED_COLUMNS << [:deprecated_preview_cards, :id] if table_exists?(:deprecated_preview_cards)
-
   def migrate_columns(to_type)
+    included_columns = [
+      [:account_domain_blocks, :account_id],
+      [:account_domain_blocks, :id],
+      [:accounts, :id],
+      [:blocks, :account_id],
+      [:blocks, :id],
+      [:blocks, :target_account_id],
+      [:conversation_mutes, :account_id],
+      [:conversation_mutes, :id],
+      [:domain_blocks, :id],
+      [:favourites, :account_id],
+      [:favourites, :id],
+      [:favourites, :status_id],
+      [:follow_requests, :account_id],
+      [:follow_requests, :id],
+      [:follow_requests, :target_account_id],
+      [:follows, :account_id],
+      [:follows, :id],
+      [:follows, :target_account_id],
+      [:imports, :account_id],
+      [:imports, :id],
+      [:media_attachments, :account_id],
+      [:media_attachments, :id],
+      [:mentions, :account_id],
+      [:mentions, :id],
+      [:mutes, :account_id],
+      [:mutes, :id],
+      [:mutes, :target_account_id],
+      [:notifications, :account_id],
+      [:notifications, :from_account_id],
+      [:notifications, :id],
+      [:oauth_access_grants, :application_id],
+      [:oauth_access_grants, :id],
+      [:oauth_access_grants, :resource_owner_id],
+      [:oauth_access_tokens, :application_id],
+      [:oauth_access_tokens, :id],
+      [:oauth_access_tokens, :resource_owner_id],
+      [:oauth_applications, :id],
+      [:oauth_applications, :owner_id],
+      [:reports, :account_id],
+      [:reports, :action_taken_by_account_id],
+      [:reports, :id],
+      [:reports, :target_account_id],
+      [:session_activations, :access_token_id],
+      [:session_activations, :user_id],
+      [:session_activations, :web_push_subscription_id],
+      [:settings, :id],
+      [:settings, :thing_id],
+      [:statuses, :account_id],
+      [:statuses, :application_id],
+      [:statuses, :in_reply_to_account_id],
+      [:stream_entries, :account_id],
+      [:stream_entries, :id],
+      [:subscriptions, :account_id],
+      [:subscriptions, :id],
+      [:tags, :id],
+      [:users, :account_id],
+      [:users, :id],
+      [:web_settings, :id],
+      [:web_settings, :user_id],
+    ]
+    included_columns << [:deprecated_preview_cards, :id] if table_exists?(:deprecated_preview_cards)
+
     # Print out a warning that this will probably take a while.
     say ''
     say 'WARNING: This migration may take a *long* time for large instances'
@@ -86,7 +86,7 @@ class IdsToBigints < ActiveRecord::Migration[5.1]
       sleep 1
     end
 
-    tables = INCLUDED_COLUMNS.map(&:first).uniq
+    tables = included_columns.map(&:first).uniq
     table_sizes = {}
 
     # Sort tables by their size
@@ -94,7 +94,7 @@ class IdsToBigints < ActiveRecord::Migration[5.1]
       table_sizes[table] = estimate_rows_in_table(table)
     end
 
-    ordered_columns = INCLUDED_COLUMNS.sort_by do |col_parts|
+    ordered_columns = included_columns.sort_by do |col_parts|
       [-table_sizes[col_parts.first], col_parts.last]
     end
 
diff --git a/package.json b/package.json
index aa9d809f1..b6d2a514b 100644
--- a/package.json
+++ b/package.json
@@ -87,7 +87,7 @@
     "classnames": "^2.2.5",
     "compression-webpack-plugin": "^3.0.0",
     "cross-env": "^5.1.4",
-    "css-loader": "^2.1.1",
+    "css-loader": "^3.1.0",
     "cssnano": "^4.1.10",
     "detect-passive-events": "^1.0.2",
     "dotenv": "^8.0.0",
diff --git a/spec/models/account_spec.rb b/spec/models/account_spec.rb
index 6495a6193..3a17d540a 100644
--- a/spec/models/account_spec.rb
+++ b/spec/models/account_spec.rb
@@ -583,12 +583,29 @@ RSpec.describe Account, type: :model do
         expect(account.valid?).to be true
       end
 
+      it 'is valid if we are creating an instance actor account with a period' do
+        account = Fabricate.build(:account, id: -99, actor_type: 'Application', locked: true, username: 'example.com')
+        expect(account.valid?).to be true
+      end
+
+      it 'is valid if we are creating a possibly-conflicting instance actor account' do
+        account_1 = Fabricate(:account, username: 'examplecom')
+        account_2 = Fabricate.build(:account, id: -99, actor_type: 'Application', locked: true, username: 'example.com')
+        expect(account_2.valid?).to be true
+      end
+
       it 'is invalid if the username doesn\'t only contains letters, numbers and underscores' do
         account = Fabricate.build(:account, username: 'the-doctor')
         account.valid?
         expect(account).to model_have_error_on_field(:username)
       end
 
+      it 'is invalid if the username contains a period' do
+        account = Fabricate.build(:account, username: 'the.doctor')
+        account.valid?
+        expect(account).to model_have_error_on_field(:username)
+      end
+
       it 'is invalid if the username is longer then 30 characters' do
         account = Fabricate.build(:account, username: Faker::Lorem.characters(31))
         account.valid?
diff --git a/yarn.lock b/yarn.lock
index 8a8fd8d78..ff520ad78 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2167,15 +2167,10 @@ callsites@^3.0.0:
   resolved "https://registry.yarnpkg.com/callsites/-/callsites-3.0.0.tgz#fb7eb569b72ad7a45812f93fd9430a3e410b3dd3"
   integrity sha512-tWnkwu9YEq2uzlBDI4RcLn8jrFvF9AOi8PxDNU3hZZjJcjkcRAq3vCI+vZcg1SuxISDYe86k9VZFwAxDiJGoAw==
 
-camelcase@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.0.0.tgz#03295527d58bd3cd4aa75363f35b2e8d97be2f42"
-  integrity sha512-faqwZqnWxbxn+F1d399ygeamQNy3lPp/H9H6rNrqYh4FSVCtcY+3cub1MxA8o9mDd55mM8Aghuu/kuyYA6VTsA==
-
-camelcase@^5.2.0:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.2.0.tgz#e7522abda5ed94cc0489e1b8466610e88404cf45"
-  integrity sha512-IXFsBS2pC+X0j0N/GE7Dm7j3bsEBp+oTpb7F50dwEVX7rf3IgwO9XatnegTsDtniKCUtEJH4fSU6Asw7uoVLfQ==
+camelcase@^5.0.0, camelcase@^5.3.1:
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
+  integrity sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==
 
 caniuse-api@^3.0.0:
   version "3.0.0"
@@ -2748,22 +2743,23 @@ css-list-helpers@^1.0.1:
   dependencies:
     tcomb "^2.5.0"
 
-css-loader@^2.1.1:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/css-loader/-/css-loader-2.1.1.tgz#d8254f72e412bb2238bb44dd674ffbef497333ea"
-  integrity sha512-OcKJU/lt232vl1P9EEDamhoO9iKY3tIjY5GU+XDLblAykTdgs6Ux9P1hTHve8nFKy5KPpOXOsVI/hIwi3841+w==
+css-loader@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/css-loader/-/css-loader-3.1.0.tgz#6f008b993b8ce812e6bab57f3cbfdc7a7cf28685"
+  integrity sha512-MuL8WsF/KSrHCBCYaozBKlx+r7vIfUaDTEreo7wR7Vv3J6N0z6fqWjRk3e/6wjneitXN1r/Y9FTK1psYNOBdJQ==
   dependencies:
-    camelcase "^5.2.0"
-    icss-utils "^4.1.0"
+    camelcase "^5.3.1"
+    cssesc "^3.0.0"
+    icss-utils "^4.1.1"
     loader-utils "^1.2.3"
     normalize-path "^3.0.0"
-    postcss "^7.0.14"
+    postcss "^7.0.17"
     postcss-modules-extract-imports "^2.0.0"
-    postcss-modules-local-by-default "^2.0.6"
+    postcss-modules-local-by-default "^3.0.2"
     postcss-modules-scope "^2.1.0"
-    postcss-modules-values "^2.0.0"
-    postcss-value-parser "^3.3.0"
-    schema-utils "^1.0.0"
+    postcss-modules-values "^3.0.0"
+    postcss-value-parser "^4.0.0"
+    schema-utils "^2.0.0"
 
 css-select-base-adapter@~0.1.0:
   version "0.1.1"
@@ -4838,15 +4834,10 @@ iconv-lite@0.4.24, iconv-lite@^0.4.24, iconv-lite@^0.4.4, iconv-lite@~0.4.13:
   dependencies:
     safer-buffer ">= 2.1.2 < 3"
 
-icss-replace-symbols@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/icss-replace-symbols/-/icss-replace-symbols-1.1.0.tgz#06ea6f83679a7749e386cfe1fe812ae5db223ded"
-  integrity sha1-Bupvg2ead0njhs/h/oEq5dsiPe0=
-
-icss-utils@^4.1.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/icss-utils/-/icss-utils-4.1.0.tgz#339dbbffb9f8729a243b701e1c29d4cc58c52f0e"
-  integrity sha512-3DEun4VOeMvSczifM3F2cKQrDQ5Pj6WKhkOq6HD4QTnDUAq8MQRxy5TX6Sy1iY6WPBe4gQ3p5vTECjbIkglkkQ==
+icss-utils@^4.0.0, icss-utils@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/icss-utils/-/icss-utils-4.1.1.tgz#21170b53789ee27447c2f47dd683081403f9a467"
+  integrity sha512-4aFq7wvWyMHKgxsH8QQtGpvbASCf+eM3wPRLI6R+MgAnTCZ6STYsRvttLvRWK0Nfif5piF394St3HeJDaljGPA==
   dependencies:
     postcss "^7.0.14"
 
@@ -7617,14 +7608,15 @@ postcss-modules-extract-imports@^2.0.0:
   dependencies:
     postcss "^7.0.5"
 
-postcss-modules-local-by-default@^2.0.6:
-  version "2.0.6"
-  resolved "https://registry.yarnpkg.com/postcss-modules-local-by-default/-/postcss-modules-local-by-default-2.0.6.tgz#dd9953f6dd476b5fd1ef2d8830c8929760b56e63"
-  integrity sha512-oLUV5YNkeIBa0yQl7EYnxMgy4N6noxmiwZStaEJUSe2xPMcdNc8WmBQuQCx18H5psYbVxz8zoHk0RAAYZXP9gA==
+postcss-modules-local-by-default@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/postcss-modules-local-by-default/-/postcss-modules-local-by-default-3.0.2.tgz#e8a6561be914aaf3c052876377524ca90dbb7915"
+  integrity sha512-jM/V8eqM4oJ/22j0gx4jrp63GSvDH6v86OqyTHHUvk4/k1vceipZsaymiZ5PvocqZOl5SFHiFJqjs3la0wnfIQ==
   dependencies:
-    postcss "^7.0.6"
-    postcss-selector-parser "^6.0.0"
-    postcss-value-parser "^3.3.1"
+    icss-utils "^4.1.1"
+    postcss "^7.0.16"
+    postcss-selector-parser "^6.0.2"
+    postcss-value-parser "^4.0.0"
 
 postcss-modules-scope@^2.1.0:
   version "2.1.0"
@@ -7634,12 +7626,12 @@ postcss-modules-scope@^2.1.0:
     postcss "^7.0.6"
     postcss-selector-parser "^6.0.0"
 
-postcss-modules-values@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/postcss-modules-values/-/postcss-modules-values-2.0.0.tgz#479b46dc0c5ca3dc7fa5270851836b9ec7152f64"
-  integrity sha512-Ki7JZa7ff1N3EIMlPnGTZfUMe69FFwiQPnVSXC9mnn3jozCRBYIxiZd44yJOV2AmabOo4qFf8s0dC/+lweG7+w==
+postcss-modules-values@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-modules-values/-/postcss-modules-values-3.0.0.tgz#5b5000d6ebae29b4255301b4a3a54574423e7f10"
+  integrity sha512-1//E5jCBrZ9DmRX+zCtmQtRSV6PV42Ix7Bzj9GbwJceduuf7IqP8MgeTXuRDHOWj2m0VzZD5+roFWDuU8RQjcg==
   dependencies:
-    icss-replace-symbols "^1.1.0"
+    icss-utils "^4.0.0"
     postcss "^7.0.6"
 
 postcss-normalize-charset@^4.0.1:
@@ -7779,7 +7771,7 @@ postcss-selector-parser@^5.0.0-rc.4:
     indexes-of "^1.0.1"
     uniq "^1.0.1"
 
-postcss-selector-parser@^6.0.0:
+postcss-selector-parser@^6.0.0, postcss-selector-parser@^6.0.2:
   version "6.0.2"
   resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-6.0.2.tgz#934cf799d016c83411859e09dcecade01286ec5c"
   integrity sha512-36P2QR59jDTOAiIkqEprfJDsoNrvwFei3eCqKd1Y0tUsBimsq39BLp7RD+JWny3WgB1zGhJX8XVePwm9k4wdBg==
@@ -7807,11 +7799,16 @@ postcss-unique-selectors@^4.0.1:
     postcss "^7.0.0"
     uniqs "^2.0.0"
 
-postcss-value-parser@^3.0.0, postcss-value-parser@^3.3.0, postcss-value-parser@^3.3.1:
+postcss-value-parser@^3.0.0, postcss-value-parser@^3.3.1:
   version "3.3.1"
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-3.3.1.tgz#9ff822547e2893213cf1c30efa51ac5fd1ba8281"
   integrity sha512-pISE66AbVkp4fDQ7VHBwRNXzAAKJjw4Vw7nWI/+Q3vuly7SNfgYXvm6i5IgFylHGK5sP/xHAbB7N49OS4gWNyQ==
 
+postcss-value-parser@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.0.0.tgz#99a983d365f7b2ad8d0f9b8c3094926eab4b936d"
+  integrity sha512-ESPktioptiSUchCKgggAkzdmkgzKfmp0EU8jXH+5kbIUB+unr0Y4CY9SRMvibuvYUBjNh1ACLbxqYNpdTQOteQ==
+
 postcss@^5.0.16:
   version "5.2.18"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-5.2.18.tgz#badfa1497d46244f6390f58b319830d9107853c5"
@@ -7822,7 +7819,7 @@ postcss@^5.0.16:
     source-map "^0.5.6"
     supports-color "^3.2.3"
 
-postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.16, postcss@^7.0.5, postcss@^7.0.6:
+postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.16, postcss@^7.0.17, postcss@^7.0.5, postcss@^7.0.6:
   version "7.0.17"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.17.tgz#4da1bdff5322d4a0acaab4d87f3e782436bad31f"
   integrity sha512-546ZowA+KZ3OasvQZHsbuEpysvwTZNGJv9EfyCQdsIDltPSWHAeTQ5fQy/Npi2ZDtLI3zs7Ps/p6wThErhm9fQ==
@@ -8952,6 +8949,14 @@ schema-utils@^1.0.0:
     ajv-errors "^1.0.0"
     ajv-keywords "^3.1.0"
 
+schema-utils@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-2.0.1.tgz#1eec2e059556af841b7f3a83b61af13d7a3f9196"
+  integrity sha512-HJFKJ4JixDpRur06QHwi8uu2kZbng318ahWEKgBjc0ZklcE4FDvmm2wghb448q0IRaABxIESt8vqPFvwgMB80A==
+  dependencies:
+    ajv "^6.1.0"
+    ajv-keywords "^3.1.0"
+
 scroll-behavior@^0.9.1:
   version "0.9.9"
   resolved "https://registry.yarnpkg.com/scroll-behavior/-/scroll-behavior-0.9.9.tgz#ebfe0658455b82ad885b66195215416674dacce2"