fix: Prevent ember-pikaday from automatically updating values to within a min/max date bounds

[Duder-onomy]

If merged, ember-pikaday will no longer enforce a min/max date restriction.

Original issue: #581

Ember-pikaday was running code in the modifier that would update the value to the min/max date if that value was outside of the min/max date bounds. This code was causing issues as it would update the value in the same loop that the value was read. Creating exceptions.

The readme used to have this text, we are getting rid of this:

- if you set `minDate` or `maxDate` and that causes `value` to be outside the legal range, we adjust `value` and fire `onSelect` to inform you of the change

• Removes code that forces the 'value' to be within a minDate or maxDate restriction
• Updates tests
• Removes mention of this feature from the readme

[MelSumner]

ok running the test suite now, will do a new (major) release if it all works out.

[knownasilya]

Looks good

[MelSumner]

Thank you for resolving this issue!