Merge pull request manyminds#258 from manyminds/go-17-travis

Allow travis to test for 1.7 as well

Merge pull request manyminds#202 from manyminds/internal-data-structs

Major Refactoring: Fully typed structs that represent a jsonapi document

Merge pull request manyminds#209 from manyminds/sparse-fieldsets

sparse fieldsets filtering support

Merge pull request manyminds#182 from manyminds/router_replacement

Extract router to be an interface

Merge pull request manyminds#175 from manyminds/documentation-middlew…

…are-context

document middleware/context usage

Merge pull request manyminds#155 from manyminds/issue-154

Fix renaming bug that ocured while unmarshaling

Merge pull request manyminds#108 from univedo/get-router

Method to get instance of julienschmidt httprouter

test api with prefix for manyminds#73

seems to work all fine