New Title

[cportele]

resolves #189

[cportele]

resolves #201

https://github.com/opengeospatial/WFS_FES/blob/issue-189/core/standard/clause_5_conventions.adoc#role-of-openapi (the first time YAML is mentioned) includes a paragraph about YAML and YAML has been added to the bibliography.

[cportele]

resolves #115

Recommendation and text added in https://github.com/opengeospatial/WFS_FES/blob/issue-189/core/standard/clause_7_core.adoc#http-11

[cportele]

resolves #90

The text has been reviewed and some clarifications have been added in clause 7.

[cportele]

resolves #199 (except the XML part that still needs to be addressed)

Note that as part of the edits it is now "feature collections" instead of "feature collections metadata". While there is also some metadata about the collections, it is mainly a list of feature collections with the links to each collection. For example, see https://github.com/opengeospatial/WFS_FES/blob/issue-189/core/standard/clause_0_front_material.adoc and https://github.com/opengeospatial/WFS_FES/blob/issue-189/core/standard/clause_7_core.adoc#overview

[cportele]

resolves #164

See https://github.com/opengeospatial/WFS_FES/blob/issue-189/core/standard/clause_0_front_material.adoc

[cportele]

resolves #124