use hugo global function and .URL deprecated

[nonumeros]

v 0.54 runs fine, v 0.55 (recently released) however, returns:

WARN: Page's .Hugo is deprecated and will be removed in a future release. Use the global hugo function.
WARN: Page's .URL is deprecated and will be removed in a future release. Use .Permalink or .RelPermalink. If what you want is the front matter URL value, use .Params.url.

WARN: Page's .RSSLink is deprecated and will be removed in a future release. Use the Output Format's link, e.g. something like: {{ with .OutputFormats.Get "RSS" }}{{ . RelPermalink }}{{ end }}.

the only warning left would be Page's .GetParam is deprecated and will be removed in a future release. Use .Param or .Params.myParam

this seems to fix it, the devs changed everything around

[Lednerb]

Seems valid,
Thank you for your contribution! 👍

What's about backwards compatibility?
Will these changes work with older hugo versions?

[nonumeros]

What's about backwards compatibility?

What I do know is that v 0.54 seemed working fine with these changes. Also, v 0.53.

But all of that stopped with v 0.52 - unfortunately. I'm assuming that v 0.51 won' t work either.

[Lednerb]

Ok, v.0.5.3 was released on 2018-12-24 so I think it's OK to break with older versions.

I will check the compatibility once by my own and we need to update the README.md for the minimum Version.

Maybe you can send the fix for that, so we can merge soon.

[nonumeros]

done!

[Lednerb]

Checked, works until minimum 0.53!