First part of the refactoring and GitHub token integration.
* Separated the API communication into an own module.
* Support for [personal GitHub API
* tokens](https://github.com/settings/tokens/new).
* Shows a warning if the user is about to hit the quota limit.
v
v1.1.0
Merge branch 'master' of https://github.com/akoenig/zed-gfm-preview into development

Conflicts:
	HISTORY.md
	README.md
1.1.0