Add support for more java.time objects

[rupert-madden-abbott]

In this issue, support for java.time.Instant was added.

Please can support for more of java.time be added, specifically java.time.Duration would be helpful.

[aronstrandberg]

This is really frustrating for us as well.

[MoellJ]

Just opened a PR for java.time.Duration. If this is accepted I'll also work on other java.time* 'primitives'