Release 0.7.0

Changes:
- Essentially rewrite the module -- too many to list
- `apache::vhost` has many abilities -- see README.md for details
- `apache::mod::*` classes provide httpd mod-loading capabilities
- `apache` base class is much more configurable

Bugfixes:
- Many. And many more to come
Merge pull request #247 from hunner/release_0.7.0

Release 0.7.0