Vaadin Framework 8.1.4

Vaadin Framework 8.1.4 is a maintenance release with the following fixes and enhancements:

• Fix caption of Panel in a Composite
• Fix VaadinIcons theme compilation with libsass
• Fix caption positioning with GridLayout
• Improve Tree styling for scrollbars
• Fix RadioButtonGroup and CheckBoxGroup in GridLayout
• Improve Grid performance
• Fix setting component visibility with Push
• Fix collapsing issue in TreeGrid

See complete list of changes since 8.1.3