v3.1.0

Changes Since v3.0.0:

• f8e1897 fix: update _hasInputValue on programmatic input change (#211)

• d913673 chore: update vaadin-combo-box version to 5.5.2 (#214)

• 77f03a4 chore: update vaadin-text-field version to 2.10.0 (#213)

• af68970 feat: add internal has-input-value-changed event (#209)

• bbb8c02 docs: add JSDoc for validate method (#208)

• 0f0fb78 feat: add methods to make setting invalid overridable (#207)

• a14045e feat: fire a validated event on validation (#206)

• 3b4144c test: make sure no initial validation happens (#205)