Feature Request - Restrict Display to Bounds

[tcoats]

It would be useful to restrict the view of a given Leaflet to a specific area.

This could be used:

• In contact forms
• Where the area is important, for example a city map or a map of a specific area

I would expect Leaflet to never show map outside the restricted area, this includes:

• When zooming out, restricting an area would impose a minimum zoom
• Ideally this minimum zoom to be fractional - eg a zoom level between 4 and 5 displays the area bets
• When resizing, or automatically resizing the imposed minimum zoom would have to be updated

I'm considering writing this myself, any guidance would be most welcome.

In Summary:

• Map Options allowing a developer to restrict the area allowed to display in Leaflet

[mourner]

This feature is in the to-do list already, see #93, so closing as a duplicate.
Thanks for the additional comments, and contributions are of course welcome :)