0.6.17 many fixes, see description

bump to 0.6.17
* last update for the old path
* updated docs
* fixed src typos
* bumped xhook to 1.3.0
* removed version from dist directory (closes #124) - global find/replace all affected links
* fixed event prop deprecation warning
* xhook bug fixes (closes #120)
* user controlled xhook.addWithCredentials (closes #125 @DveMac)
* fixed timeout checks (closes #118 @rcambrj)
* added log,warn,timeout hooks (closes #104)
* added xhr abort on (iframe) timeout (fixes #102)