gklyne/annalist: Annalist release 0.5.4: bug fixes, usability, help and diagnostic text improvements, Turtle data output

This release simplifies workflows for creating nested subtype definitions, adds options for generating Turtle data output, and fixes numerous bugs. Specific visible changes include: Turtle data output for entities and entity lists, to make it easier to share Annalist data with other linked data applications. New facility to create a subtype with key values inherited or derived from the parent type. Revised creation of view and list definitions for a type, to work more easily for subtypes. Fields from existing type view and list definitions, or from the default view and list definitions, are copied into the new definitions created. Changes to help text, diagnostics and other messages