quicksilver 0.3.5

A simple game framework for 2D games in pure Rust
<!--- Describe your changes in detail -->

## Motivation and Context
<!--- Why is this change required? What problem does it solve? -->
<!--- If it fixes an open issue, please link to the issue here. -->

## Screenshots (if appropriate):
<!--- You can drag image files into GitHub's edit-window -->

## Types of changes
<!--- What types of changes does your code introduce? Remove all those that do not apply -->
- Breaking change (fix or feature that would cause existing functionality to change)
- New feature (non-breaking change which adds functionality)
- Bug fix (non-breaking change which fixes an issue)

## Checks
<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
- [ ] I have read `CONTRIBUTING.md`.
- [ ] This Pull Request targets the right branch 
- [ ] I have updated `CHANGES.md`, with [BREAKING] next to all breaking changes
- [ ] I have updated the documentation accordingly if necessary
- [ ] I have updated / added tests to cover my changes if necessary
<!-- Remove these checks if this Pull Request does not affect the public API -->
- [ ] The example found in `README.md` compiles and functions like expected
- [ ] The example found in `src/lib.rs` compiles and functions like expected