fix up release date

update front page with 1.7.1

Fix comment typo.

Make --stdin work on kernels.tindex.

Merge pull request PDAL#1703 from PDAL/alpine-edge-issues

Remove '..' in configured temp path for unit tests

use LASzip 3.1.1 for pdal/dependencies docker image

check out full branch for docker

check out full branch for docker

update dead link

update download links to 1.3.0