Allow faraday 2

[jrochkind]

Right now our dependency on faraday-middleware means any app using this gem (or another gem that depends on it) cannot update to faraday 2.0, because the faraday-middleware gem is faraday 1.0-only.

As far as i can tell, we use faraday-middleware only for the "follow redirects" middleware.

ruby-oai/lib/oai/client.rb

Lines 97 to 99 in 3cdc12d

	if follow_redirects
	require 'faraday_middleware'
	builder.response :follow_redirects, :limit => follow_redirects.to_i

Updating ruby-oai to require faraday 2.x is likely to be disruptive to current users. We really want it to support 1.x or 2.x.

It's not entirely clear how to use that middleware while working with either faraday 1.x or 2.x

It may require some upstream PR's, looking into it.

lostisland/faraday#1358 (comment)

[jrochkind]

tisba/faraday-follow-redirects#4

[jrochkind]

Hmm, after switching over to newest version of faraday_follow-redirects gem, we can upgrade to Faraday 2.x... but tests don't actually pass.

We get a <Encoding::CompatibilityError(<incompatible encoding regexp match (ASCII-8BIT regexp with ISO-8859-1 string)>) in one.

I will see if I can find time to try to debug.