- Fixes #1353
  - Do not limit the results returned from Pelias to 1;
  - Removed test that was enforcing this condition;

It appears that at some point they changed the "TLS only for paying
customers" rule.

See: https://ipinfo.io/developers#https-ssl
"Our API is available over a secure HTTPS connection for all users, even
on the free plan."

Defunct as of Feb 1, 2018: https://mapzen.com/blog/shutdown/

This fixes erroring tests for ESRI lookup, which seem unrelated.
Something weird is going on. Need to investigate.

"ambiguous first argument; put parentheses or a space even after `/'
operator".

Fixes #1333

Fixes #1307.

(Don't set globally.)

Fixes #1059.

by making all class methods public. Previously a call to #near or
within_bounding_box produced:

  DEPRECATION WARNING: Delegating missing full_column_name method to
  Venue. Accessibility of private/protected class methods in :scope is
  deprecated and will be removed in Rails 6.0.

I don't like turning all these methods public but at the moment I don't
see any way around it.

Make Nominatim the default lookup and map provider.

Closes #1026.

viz: add `coordinates` attribute and remove `latitude` and `longitude`.

Fixes #1258 and #1302.

Culprits: .present? and .try

Appears to be defunct.

Fixes #609. Bing seems to support this type of character escaping now.
It's not discussed in their documentation but it works with every query
I've tried so hopefully we're finally good on this issue.

Also remove some unnecessary assertions from tests.