Prep for v1.1.5 release

[PhillSimonds]

Fixes #141

[glennmatthews]

Is this the right fix? Do we have any environments that need jsonschema>=4.6 at this point in time, and so would be incompatible here?

[PhillSimonds]

Is this the right fix? Do we have any environments that need jsonschema>=4.6 at this point in time, and so would be incompatible here?

I believe it is the right fix -- v1.1.4 added support for jsonschema versions in the 4.x train. It was removed from pypy and github because of the issue where the format_nongpl extra was renamed to format-nongpl in 4.6, and that naming issue caused builds which required jsonschema<4.6 trains to fail.

We are planning to release this version (v1.1.5) which will allow for jsonschema<4.6, then another one at the same time (v1.2.0) which will allow for jsonschema>=4.6.