Watch stacking era begins

1.2.1

On watchOS, now stacking TextField and Presets button, per #2

Fix for watchOS 10

1.2.0

Fix for appearance in watchOS 10, #1

1.1.2

simplified package; added images to README

1.1.1

Moved Select/Clear all in multi picker to .bottomBar

1.1.0

Improved picker; added multi-picker; API simplified

1.0.0

first commit