* fix test for 1.16

fixes #249
Forgot to allow help to be called on imported targets. Kinda useful, eh?

* fix: determanistic compiled mainfile

sort template data so resulting mainfile is consistantly reproducible,
which is important to leverage build cache and results in a consistent
build id on output (given identical build parameters, e.g. ldflags,
output file name, etc.)

Result of `mage -compile ./mage_static && go tool buildid ./mage_static`
should now always be identical on repeated invocation.

Results in a probably imperceptible build time quickening, but solves a
minor peave of mine, and adds a test as protection from regression :)

* fix: poorly spelled test

Co-authored-by: Nate Finch <nate.finch@gmail.com>

* Update parse/parse.go

got caught out not using vim's spellcheck

Co-authored-by: Paul Burlumi <paul@burlumi.com>

* Update mage/main.go

got caught out not using vim's spellcheck

Co-authored-by: Paul Burlumi <paul@burlumi.com>

* fix spelling

Co-authored-by: Paul Burlumi <paul@burlumi.com>

Co-authored-by: Nate Finch <nate.finch@gmail.com>
Co-authored-by: Paul Burlumi <paul@burlumi.com>
Co-authored-by: Nate Finch <natefinch@github.com>

Co-authored-by: Nate Finch <nate.finch@gmail.com>

* Add asdf installation instructions to docs

* Update site/content/index.md

Co-authored-by: Nate Finch <natefinch@github.com>

* Clean up asdf installation instructions

Co-authored-by: Nate Finch <nate.finch@gmail.com>
Co-authored-by: Nate Finch <natefinch@github.com>

* sh.run(): quoted strings before join

Co-authored-by: shouldsee <shouldsee@qq.com>
Co-authored-by: Nate Finch <nate.finch@gmail.com>

* this fixes the rollback mechanism for tags during a release
* check for goreleaser before we do anything else

* ci: add github action workflow
* remove travis
* drop go1.10.x and go1.9.x
* add go1.17