v0.4.0 - API BREAK

use

local gen = require("xml-generator")

local elem = gen.xml.element_name {property="value"} {
}

instead of

local xml_gen = require("xml-generator")

local elem = xml_gen.generate_node(function (xml)
    return xml.element_name {property="value"} {}
end)

Full Changelog: 0.3.0...0.4.0