More refactoring, fixed jest

package.json

src/mol-base/collections/integer.ts

src/mol-base/collections/integer/_spec/linked-index.spec.ts

src/mol-base/collections/integer/linked-index.ts

src/mol-base/collections/table.ts

src/mol-base/collections/table/_spec/table.spec.ts

src/mol-base/collections/table/column-helpers.ts

src/mol-base/collections/table/column.ts

src/mol-base/collections/table/table.ts

src/mol-data/structure/model/builders/mmcif.ts

src/mol-data/structure/model/properties/conformation.ts

src/mol-data/structure/model/properties/hierarchy.ts

src/mol-data/structure/model/utils/hierarchy-keys.ts

src/mol-io/reader/_spec/column.spec.ts

src/mol-io/reader/cif/binary/field.ts

src/mol-io/reader/cif/data-model.ts

src/mol-io/reader/cif/schema.ts

src/mol-io/reader/cif/text/field.ts

src/mol-io/reader/common/text/column/fixed.ts

src/mol-io/reader/common/text/column/token.ts