v0.018

    Add deletion gibson design creation
add new command to grab target coordinate from exons
add new command to get target coordinates from user
add new default target coordinates file name
refactor oligo pair region finders for gibson designs to work with new target parameter initial step
command fix, stop deleting directory holding target coordinates
update tests for oligo-pair-region-gibson command/role after refactor
whitespace fix
update tests for oligo-pair-region-gibson-del command/role after refactor
bugfix, need to work out five prime region start before five prime region end on negative strand
Update tests for Role::OligoPairRegionsGibson after refactor
whitespace
modify gibson design commands to carry out new target coordinates step
rename attribute to avoid name clash
tidy
add tests for target-exons command
add tests for target-location command
merge code from the OligoRegionCoordinates and OligoRegionCoordinatesGibson roles
update tests for OligoRegionCoordinates role, after merging in gibson role
remove role