Merge branch 'master' of https://github.com/IgniteUI/igniteui-angular into fluent-theme

# Conflicts:
#	projects/igniteui-angular/src/lib/core/styles/components/calendar/_calendar-theme.scss
#	projects/igniteui-angular/src/lib/core/styles/themes/schemas/dark/_calendar.scss
#	projects/igniteui-angular/src/lib/core/styles/themes/schemas/light/_calendar.scss

Author: MPopov

.travis.yml

@@ -17,11 +17,16 @@ before_script:
 # more heap mem per https://github.com/angular/angular-cli/issues/12645, https://github.com/npm/npm/issues/12238#issuecomment-367147962
 - export NODE_OPTIONS="--max_old_space_size=4096"
 - npm install -g gulp
+- npm install -g istanbul-combine
 script:
 - npm run lint:lib
 - ng build igniteui-angular --prod
 - npm run build:style
-- if [ -z "${TRAVIS_TAG}" ]; then npm run test:lib; fi
+- if [ -z "${TRAVIS_TAG}" ]; then npm run test:lib:others; fi
+- if [ -z "${TRAVIS_TAG}" ]; then npm run test:lib:grid; fi
+- if [ -z "${TRAVIS_TAG}" ]; then npm run test:lib:tgrid; fi
+- if [ -z "${TRAVIS_TAG}" ]; then npm run test:lib:hgrid; fi
+- if [ -z "${TRAVIS_TAG}" ]; then istanbul-combine -d coverage -p none -r lcov -r html coverage/hierarchical-grid/coverage-final.json coverage/tree-grid/coverage-final.json coverage/non-grid/coverage-final.json coverage/grid/coverage-final.json; fi
 - if [ -z "${TRAVIS_TAG}" ]; then npm run test:schematics; fi
 - if [ -z "${TRAVIS_TAG}" ] && [ "${TRAVIS_REPO_SLUG}" == "IgniteUI/igniteui-angular" ]; then cat ./coverage/lcov.info | coveralls; fi
 

CHANGELOG.md

@@ -14,6 +14,26 @@ All notable changes for each version of this project will be documented in this
     - **Breaking Change** `igxExcelStyleMovingTemplate` directive is renamed to `igxExcelStyleMoving`.
     - **Breaking Change** `igxExcelStyleHidingTemplate` directive is renamed to `igxExcelStyleHiding`.
     - **Breaking Change** `igxExcelStylePinningTemplate` directive is renamed to `igxExcelStylePinning`.
+- `IgxCombo`
+    - Combo selection is now consistent when `valueKey` is defined. When `valueKey` is specified, selection is based on the value keys of the items. For example:
+    ```html
+    <igx-combo [data]="myCustomData" valueKey="id" displayKey="text"></igx-combo>
+    ```
+    ```typescript
+    export class MyCombo {
+        ...
+        public combo: IgxComboComponent;
+        public myCustomData: { id: number, text: string } = [{ id: 0, name: "One" }, ...];
+        ...
+        ngOnInit() {
+            // Selection is done only by valueKey property value
+            this.combo.selectItems([0, 1]);
+        }
+    }
+    ```
+   - **Breaking Change** When using `[valueKey]`, combo methods, events and outputs **cannot** be handled with *data item references*.
+   - For more information, visit the component's [readme](https://github.com/IgniteUI/igniteui-angular/tree/master/projects/igniteui-angular/src/lib/combo/README.md)
+
 ## 8.1.4
 - `IgxDialog` new @Input `positionSettings` is now available. It provides the ability to get/set both position and animation settings of the Dialog component. 
 

azure-pipelines.yml

@@ -7,17 +7,42 @@ steps:
   env:
     AZURE_PIPELINES: "true"
 
+- script: sudo npm install -g istanbul-combine
+  displayName: 'Install coverage combiner'
+  env:
+    AZURE_PIPELINES: "true"
+
 - script: npm run lint:lib
   displayName: 'Run lint'
 
 - script: npm run build:lib
   displayName: 'Build source code and styles'
 
-- script: npm run test:lib:azure
-  displayName: 'Run tests'
+- script: npm run test:lib:azure:others
+  displayName: 'Run non-grid tests'
+  env:
+    NODE_OPTIONS: "--max_old_space_size=4096"
+
+- script: npm run test:lib:azure:grid
+  displayName: 'Run grid tests'
   env:
     NODE_OPTIONS: "--max_old_space_size=4096"
 
+- script: npm run test:lib:azure:tgrid
+  displayName: 'Run tree grid tests'
+  env:
+    NODE_OPTIONS: "--max_old_space_size=4096"
+
+- script: npm run test:lib:azure:hgrid
+  displayName: 'Run hierarchical grid tests'
+  env:
+    NODE_OPTIONS: "--max_old_space_size=4096"
+
+- script: istanbul-combine -d coverage -p none -r lcov -r cobertura coverage/hierarchical-grid/coverage-final.json coverage/tree-grid/coverage-final.json coverage/non-grid/coverage-final.json coverage/grid/coverage-final.json
+  displayName: 'Combine coverage results'
+  env:
+    AZURE_PIPELINES: "true"
+
 - script: cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
   condition: and(succeeded(), eq(variables['system.teamProject'], 'igniteui-angular'))
   displayName: 'Code coverage @ Coveralls'