1.3.0: Minor Version Release!

Changes:

* when a remove fails, more verbose output is given to the user on what
  they can do.
* when an exception occurs with a phase, the sprinter will now exit
  immediately with the exception of remove. Since remove is
  irreparable, it will continue with best-effort. (thanks WmoT for the
  work!)
* git pull now performs a git fetch and get merge separately. if git
  merge errors, a warning is shown over an error. (thanks staylor32!)
* sprinter now shows a 'thank you' sign if your environment is supported
* eggs containing sprinter formulas are re-downloaded every time

New features

* sprinter now reports the version (thanks staylor32!)
* adding environment variables to gui now works (this is DANGEROUS!) use
  at your own risk.
* custom prompts are now allowed for inputs
* downloading of packages now has download bars

Bugfix:

* if your environment is supported, a warning is not shown
* allow-bad-certificate now works for install
* sprinter now downloads from rawgithubpages
* globals now create the root directory, if one doesn't exist
* sandboxing now works properly on osx