Using the new osmcha API to download changeset labels

[bkowshik]

The new osmcha is here! 🎉

• https://osmcha.mapbox.com/

With it comes some changes to the API, specially render_csv=True being deprecated. 😞 The documentation of the API is at the link below:

• https://osmcha.mapbox.com/api-docs/

Changes

• The API is paginated so, we will have to do multiple requests
• The format of the csv is different and changeset_id is not the first column anymore

geometry.coordinates
geometry.type
id
properties.area
properties.check_date
properties.check_user
properties.checked
properties.comment
properties.create
properties.date
properties.delete
properties.editor
properties.harmful
properties.imagery_used
properties.is_suspect
properties.modify
properties.source
properties.uid
properties.user
type

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cc: @anandthakker @batpad @geohacker

[bkowshik]

I used the json endpoint of the osmcha API instead of the csv endpoint. The advantages are:

• We need changeset_id and changeset_harmful, others come from real changeset
• Has a next parameter with URL for the next set in the paginated results
• The next parameter is null when the last page is reached