Merge pull request mozilla#350 from mozilla/bump_release_for_0.0.18

Bump release for 0.0.18

Merge pull request mozilla#336 from mozilla/add_ptr_lookup

Add PTR lookup on IP-only target

Update readme and make pre release candidate

Merge branch 'start_using_secure_headers'

Merge branch 'bump_release_0.0.15'

Merge branch 'bump_v0.0.14'

Bump version for 0.0.13 release

Merge branch 'release0.0.12'

Merge branch 'bump_for_0.0.11_release'

Merge branch 'release0.0.10'