Fixed some typos in readme.md and contributing.md.
0.16.7
Not secure
-------------------
Minimal support for registering types without fields and abstract interface querying.
0.16.6
Not secure
-------------------
Grammar fixes - changed 'corresponding tests, if tests' to 'corresponding tests. If tests' and removed extraneous period from 'Provide specific examples to demonstrate the steps..'. Also made 'Enhancement' lowercase to stay consistent with its usage in documentation and changed 'on the Strawberry' to 'to Strawberry'.
0.16.5
Not secure
-------------------
Added issue template files (bug_report.md, feature_request.md, other_issues.md) and a pull request template file.