feat(Setup): make Bootstrap 4 the new default

BREAKING CHANGE:

If you are using Bootstrap 3 and you don't have `bootstrapVersion` explicitly in the bootstrap config of your
`ember-cli-build.js`, then this change will implicitly switch to Bootstrap 4. In this case please run
`ember g ember-bootstrap --bootstrapVersion=3` to fix it at version 3!

blueprints/ember-bootstrap/index.js

@@ -36,7 +36,7 @@ module.exports = {
   existingConfiguration: null,
 
   beforeInstall(option) {
-    let bootstrapVersion = parseInt(option.bootstrapVersion, 10) || this.retrieveBootstrapVersion() || 3;
+    let bootstrapVersion = parseInt(option.bootstrapVersion, 10) || this.retrieveBootstrapVersion() || 4;
     let preprocessor = option.preprocessor;
 
     if (bootstrapVersion !== 3 && bootstrapVersion !== 4) {

fastboot-tests/accordion-test.js

@@ -14,10 +14,10 @@ describe('accordion', function() {
 
         expect(response.statusCode).to.equal(200);
         expect($('#accordion').length).to.equal(1);
-        expect($('#accordion .panel').length).to.equal(3);
-        expect($('#accordion .panel:eq(0) .panel-title').text().trim()).to.equal('First item');
-        expect($('#accordion .panel:eq(1) .panel-title').text().trim()).to.equal('Second item');
+        expect($('#accordion .card').length).to.equal(3);
+        expect($('#accordion .card:eq(0) .card-header').text().trim()).to.equal('First item');
+        expect($('#accordion .card:eq(1) .card-header').text().trim()).to.equal('Second item');
       });
   });
 
-});
+});

fastboot-tests/carousel-test.js

@@ -16,8 +16,9 @@ describe('carousel', function() {
         expect($('#carousel').length).to.equal(1);
         expect($('#carousel').hasClass('carousel')).to.be.true;
         expect($('#carousel').hasClass('slide')).to.be.true;
-        expect($('#carousel .carousel-control').length).to.equal(2);
-        expect($('#carousel .carousel-inner .item').length).to.equal(3);
+        expect($('#carousel .carousel-control-next').length).to.equal(1);
+        expect($('#carousel .carousel-control-prev').length).to.equal(1);
+        expect($('#carousel .carousel-inner .carousel-item').length).to.equal(3);
       });
   });
 });

fastboot-tests/dropdown-test.js

@@ -16,8 +16,7 @@ describe('dropdown', function() {
         expect($('#dropdown').length).to.equal(1);
         expect($('#dropdown').hasClass('btn-group')).to.be.true;
         expect($('#dropdown button').hasClass('dropdown-toggle')).to.be.true;
-        expect($('#dropdown ul').hasClass('dropdown-menu')).to.be.true;
       });
   });
 
-});
+});

fastboot-tests/form-test.js

@@ -14,10 +14,10 @@ describe('form', function() {
 
         expect(response.statusCode).to.equal(200);
         expect($('form#form').length).to.equal(1);
-        expect($('form .form-group').length).to.equal(4);
+        expect($('form .form-group').length).to.equal(3);
         expect($('form .form-group:eq(0) label').text().trim()).to.equal('Email');
         expect($('form .form-group:eq(0) input[type=email]').length).to.equal(1);
       });
   });
 
-});
+});

fastboot-tests/modal-test.js

@@ -16,16 +16,16 @@ describe('modal', function() {
 
         // default modal
         expect($('#modal').length).to.equal(1);
-        expect($('#modal .modal.in').length).to.equal(1);
+        expect($('#modal .modal.show').length).to.equal(1);
         expect($('#modal .modal').css('display')).to.equal('block');
-        expect($('#modal .modal-backdrop.in').length).to.equal(1);
+        expect($('#modal .modal-backdrop.show').length).to.equal(1);
         expect($('#modal .modal .modal-header .modal-title').text().trim()).to.equal('modal header');
         expect($('#modal .modal .modal-body').text().trim()).to.equal('modal body');
 
         // hidden modal
         expect($('#modal-hidden').length).to.equal(1);
-        expect($('#modal-hidden .modal.in').length).to.equal(0);
+        expect($('#modal-hidden .modal.show').length).to.equal(0);
       });
   });
 
-});
+});

index.js

@@ -17,9 +17,9 @@ const resolve = require('resolve');
 const defaultOptions = {
   importBootstrapTheme: false,
   importBootstrapCSS: true,
-  importBootstrapFont: true,
+  importBootstrapFont: false,
   insertEmberWormholeElementToDom: true,
-  bootstrapVersion: 3
+  bootstrapVersion: 4
 };
 
 const supportedPreprocessors = [