* Make pub get runner respect printProgress and retry parameters

* Fix typo

* Add regression test

* Improve test

* Fix implementation and test

* Test to fix flutter_drone tests

* Revert test

* Attempt #2 to fix flutter_drone tests

* Revert attempt

* Hack: Force printProgress to debug Windows tests

* Use ProcessUtils.run to avoid dangling stdout and stderr

* Update documentation

* Clean up retry argument