Update to JDK8 and add java.nio.Path support

[andresluuk]

In one of our applications we are updating Files to Path-s, but this library only accepts File.

We should add a Parallel API for Path support. Also maybe deprecate the File methods? I would not remove them, for backwards compatibility.

Because Path is introduced in JDK7 we must upgrade the JDK also. I would upgrade to JDK8 because 7 isn't used much and that would allow us to use JDK8 features.

[toomasr]

Sounds good. Let's add the Path equivalent methods. As File isn't deprecated in the JDK we should not either. Bumping the minimum version to Java 8 makes sense!

[eku]

Will this break compatibility with Android?

[toomasr]

@eku great question, I'll check with our local Android gurus.

[eku]

@toomasr did you check with your local Android gurus?

[toomasr]

Yup and the feedback was to just maintain the latest good version for Android. I think this is good enough. Once the jdk8 branch lands we'll figure out the versioning. Probably we'll release the Path approach as 2.0 and make sure that 1.x is Android compatible.