pkgsrc-2021Q1 quarterly release

Last week pkgsrc announced the 70th quarterly release. Since this release default Go version is 1.16. Compared to the last release, over 2000 packages were updated, 381 added and 61 removed. There is also a note stating that some packages with difficult dependencies like Firefox may not compile on NetBSD 8, it is advised to upgrade to NetBSD 9. As usual, pkgsrc can be retrieved from the github mirror, CVS repository or as a tar file. Instructions can be found here.