• Upgraded dependencies that were too old.
• Removed apigen, it was acting up and not that useful.
• Added some flexibility to allow for http client selection and request options change (e.g.: timeout).

When an exception is risen, no check was made to make sure links were actually there.

Modifications kindly contributed by @lostfocus :

• Better error checking when json decode fails,
• opened private props for access in subsclass.

Correction to yesterday's buggy release.

Bug fix from @nickshears.