allow DOCTYPE declaration

[gesellix]

see http://xerces.apache.org/xerces2-j/features.html#disallow-doctype-decl

example for breaking build due to doctype checking: https://travis-ci.org/gesellix-docker/gradle-docker-plugin/builds/27949346

[coveralls]

Coverage remained the same when pulling e83c370 on gesellix:allow-doctype-decl into a69e7ad on kt3k:master.

[kt3k]

Hi, @gesellix

Thanks for contribution!

But it seems a bit strange because the document says that the default for this option is false. Do you have any idea about why the above example fails because of this option's setting?

[gesellix]

Hi @kt3k

I don't have examined the reason behind the problem, but if you have a look at the build at travis-ci you'll see why I came up with this.
I would guess that the linked documentation is correct for Xerces-J 2.3.0+, but I didn't examine which xml parser is actually used in my build. If you like, I'll try to find out :)

[kt3k]

I want to know a little more about why this happened because in the previous build no problems occured.
But this change seems mostly harmless for any environment, so I'm going to merge this for now.

If you find out the reason, please let me know.

[kt3k]

Deployed this version as v0.4.1.

[gesellix]

Thanks for merging!

One reason could be the update of Gradle zu the current 2.0-RC-1. I guess some dependencies have changed, so that another xml parser is used. I didn't compare the previous with the current dependencies, though.

[gesellix]

the build has been fixed after updating to the current coveralls plugin: https://travis-ci.org/gesellix-docker/docker-client/builds/28103407

[kt3k]

It's nice! thanks for checking.