Use correct MIME type

JSORM will now correctly use application/vnd.api+json for its Accept and Content-Type headers

Relax dependency versions

Merge pull request #117 from wadetandy/master

Relax package versions

Fix exports

v1.3.20

Correctly export debugger interface

Fix debug typings dependency

Merge pull request #115 from wadetandy/master

Don't rely on debug modules typings

v1.3.18: Merge pull request #114 from wadetandy/master

Export validation error classes

v1.3.17

Await response.text() promise correctly

Better invalid response debugging

v1.3.16

Debugger logging for invalid json response

Debug logging for invalid json body

Merge pull request #113 from wadetandy/master

Add debugger statements

v1.3.14

Fix travis build

Push NPM version fix

v1.3.10

bump version