add support for com.fasterxml.jackson.datatype:jackson-datatype-jdk8

[BigMichi1]

it would be really nice to also have the jdk8 support module available like the jsr310 module for supporting jdk 8 Optional

[BigMichi1]

perhaps this should be wait until 2.4.4 is released because of the missing SPI registration

[wilkinsona]

I'm not familiar with "the missing SPI registration". Is there a Jackson issue tracking the change?

[BigMichi1]

the change that add the SPI registration FasterXML/jackson-datatype-jdk8@4993c43 was introduced after 2.4.3 release

[philwebb]

2.4.4 has been released