Add ParcelBoundaryHoc

[dxinteractive]

A hockey version of a ParcelBoundary. Will be great for building things with discrete submit actions.

[dxinteractive]

Could also have a connectors for storing the current buffer externally. Would be perfect for localstorage.

[dxinteractive]

Config can be:

{
    name: string|(props) => string,
    originalParcel?: string|(props) => string,
    debounce?: number|(props) => number,
    hold?: boolean|(props) => boolean,
    ??? something to say which actions in buffer should be kept or not. Like "all", "none", "unchanged" ?
    // debug
    debugBuffer?: boolean|(props) => boolean
}

[dxinteractive]

Released in https://github.com/blueflag/dataparcels/releases/tag/v0.16.0