fix go.mod module definition (#20)

README: fix travis-ci links (#18)

travis: bump go versions to 1.15/1.16 (#15)

better documentation (#10)

README (#8)

Add FieldsFromRequest (#4)

* Add FieldsFromRequest

* add OptionCommaList to OptionCommaList

* README: improvements

* test package fixes

* README: improvements

Merge pull request #1 from cocoonspace/refacto/builder_formatter

Refactoring : builders & formatters