Bugfix for intergenic variants in TAD null pointer

See #224 for details.

To update to this release unzip the distribution and edit the exomiser-cli-8.0.1/application.properties to point to the exomiser-cli-8.0.0 data directory. e.g. change

#root path where data is to be downloaded and worked on
#it is assumed that all the files required by exomiser listed in this properties file
#will be found in the data directory unless specifically overridden here.
exomiser.data-directory=data

to

exomiser.data-directory=/opt/exomiser-cli-8.0.0/data