Switch TravisCI build from "nighty" to "7.0"
Switch TravisCI build from "nighty" to "7.0"

bd808/pecl-file_formats-yaml,bd808/pecl-file_formats-yaml,php/pecl-file_formats-yaml,php/pecl-file_formats-yaml,bd808/pecl-file_formats-yaml,php/pecl-file_formats-yaml,bd808/pecl-file_formats-yaml,php/pecl-file_formats-yaml