Bump version to 1.5.18 [#143255675]

Signed-off-by: Anna Thornton <athornton@pivotal.io>

Bump version to 1.5.17 [#142474207]

Signed-off-by: Anna Thornton <athornton@pivotal.io>

Bump version to 1.5.16 [#140505283]

Signed-off-by: Sam Smith <sesmith177@gmail.com>

Bump version to 1.5.15 [#138168507]

Signed-off-by: Dave Goddard <dave@goddard.id.au>

Bump version to 1.5.14 [#137170173]

Signed-off-by: Sam Smith <sesmith177@gmail.com>

don't fail

support for pypy

skip set if no path-links are found