Merge branch 'release/0.6.0' into develop
Pass settings through to OsShell.

We don't want to hardcode reading a specific set of configuration options.
Load a shell configuration file before executing any commands.
Merge branch 'feature/8-shell-config' into develop
Bump version number.
Update changelog.

Fixes issue #8.
Merge branch 'release/0.7.0'