use `jsonp` in favor of `XDomainRequest` to preserve `Cookie` headers in all situations [3rd-eden] (fixes #217)
Release 0.7.13
updated .npmignore

updated `.npmignore` to additionally ignore the `test` folder for __production__
move zuul to Makefile
README: tweak
.travis: deprecate 0.6
Makefile: cleanup
package: bump zuul
test: fix transport tests on ie
transport: style
socket: style
socket: accept `null` as first argument
socket: allow explicit `false` for `timestampRequests`
socket: more instrumentation for transport creation
polling-xhr: style
polling-xhr: handle errors for xhr creation (fixes `access denied` issues)
polling: improve url timestamp for ie11 and allow force disabling
test: improve socket closing test
test: style
transports: fix node tests error