Updated the jackson version to 2.9.9 to fix the dependency vulnerabil…

[SViktorS]

…ity.

[bhermann]

There is a weird build error related to JavaFX here that does not seem to be related with the change. I'll inspect that.

[codecov-io]

Codecov Report

Merging #38 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           develop     #38   +/-   ##
=======================================
  Coverage     8.04%   8.04%           
=======================================
  Files           45      45           
  Lines         1181    1181           
  Branches        34      34           
=======================================
  Hits            95      95           
  Misses        1086    1086

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[bhermann]

Added issue #39 to address Travis CI configuration changes.