Contains a raft of changes I was last working on in October, 2011. Most seem to have to do with refactoring the typing system. At the moment, the sample grammar doesn't run to completion, so I've got mess to clean up.

m lib/schemaform.rb
m lib/schemaform/adapters/generic_sql/adapter.rb
m lib/schemaform/adapters/generic_sql/connection.rb
m lib/schemaform/adapters/generic_sql/schema/builders.rb
m lib/schemaform/language/entity_definition.rb
m lib/schemaform/language/formula_capture.rb
m lib/schemaform/language/formula_definition.rb
+ lib/schemaform/language/formula_inversion.rb
m lib/schemaform/language/placeholders/entity_tuple.rb
m lib/schemaform/language/placeholders/literal_list.rb
m lib/schemaform/language/placeholders/literal_set.rb
m lib/schemaform/language/schema_definition.rb
m lib/schemaform/language/tuple_definition.rb
m lib/schemaform/plan/accessor.rb
m lib/schemaform/schema.rb
m lib/schemaform/schema/accessor.rb
m lib/schemaform/schema/attribute.rb
m lib/schemaform/schema/attribute_types/derived_attribute.rb
m lib/schemaform/schema/attribute_types/id_attribute.rb
m lib/schemaform/schema/attribute_types/optional_attribute.rb
+ lib/schemaform/schema/attribute_types/owner_attribute.rb
m lib/schemaform/schema/attribute_types/required_attribute.rb
+ lib/schemaform/schema/attribute_types/type_attribute.rb
m lib/schemaform/schema/collection.rb
m lib/schemaform/schema/component.rb
m lib/schemaform/schema/element.rb
m lib/schemaform/schema/entity.rb
m lib/schemaform/schema/entity_types/defined_entity.rb
m lib/schemaform/schema/entity_types/derived_entity.rb
m lib/schemaform/schema/list.rb
m lib/schemaform/schema/projection.rb
m lib/schemaform/schema/set.rb
m lib/schemaform/schema/tuple.rb
m lib/schemaform/schema/type.rb
m lib/schemaform/schema/types/coded_type.rb
m lib/schemaform/schema/types/collection_type.rb
+ lib/schemaform/schema/types/entity_reference_type.rb
m lib/schemaform/schema/types/enumerated_type.rb
m lib/schemaform/schema/types/identifier_type.rb
m lib/schemaform/schema/types/indirect_type.rb
m lib/schemaform/schema/types/list_type.rb
m lib/schemaform/schema/types/reference_type.rb
m lib/schemaform/schema/types/set_type.rb
m lib/schemaform/schema/types/structured_type.rb
m lib/schemaform/schema/types/tuple_type.rb
- lib/schemaform/utilities/baseline.rb

Removed the old readme.

- README

Added description and pointer to the wiki.

+ README.markdown

Complete renaming of expression handling to "formula" handling.

+ lib/schemaform/language/formula_capture.rb
+ lib/schemaform/language/formula_definition.rb
m lib/schemaform/language/placeholders/attribute.rb
m lib/schemaform/language/placeholders/entity_tuple.rb
m lib/schemaform/plan/accessor.rb
m lib/schemaform/runtime/connected_entity.rb
m lib/schemaform/schema/attribute.rb

Started renaming expression handling to "formula" handling, as it seems to be more accurate. File name changes in the next commit.

m lib/schemaform/language/expression_capture.rb
m lib/schemaform/language/expression_definition.rb
m lib/schemaform/language/placeholders/attribute.rb
m lib/schemaform/language/placeholders/literal_list.rb
m lib/schemaform/language/placeholders/literal_set.rb
m lib/schemaform/language/placeholders/parameter.rb
m lib/schemaform/plan/accessor.rb

More refactoring of formula handling.

m lib/schemaform/language/expression_capture.rb

Refactored some expression capture stuff to make it possible to obtain the runtime formulas.

m lib/schemaform/language/expression_capture.rb

Set up structure printing in the Schema and improved the output.

m lib/schemaform/schema/attribute.rb
m lib/schemaform/schema/collection.rb
m lib/schemaform/schema/element.rb
m lib/schemaform/schema/list.rb
m lib/schemaform/schema/set.rb
m lib/schemaform/schema/tuple.rb

Added structural representation of the full Entity structure, so that even derived attributes have structural information. No real testing, yet.

m lib/schemaform/language/expression_capture.rb
m lib/schemaform/schema/attribute.rb
m lib/schemaform/schema/collection.rb
m lib/schemaform/schema/entity.rb
m lib/schemaform/schema/entity_types/defined_entity.rb
m lib/schemaform/schema/entity_types/derived_entity.rb
m lib/schemaform/schema/type.rb
+ lib/schemaform/schema/types/indirect_type.rb
m lib/schemaform/schema/types/list_type.rb
m lib/schemaform/schema/types/set_type.rb
m lib/schemaform/schema/types/tuple_type.rb