Merge branch 'master' into mol2-2

docs/cif-schemas.md

package.json

src/reader/cif/binary/field.ts

src/reader/cif/data-model.ts

src/reader/cif/index.ts

src/reader/cif/schema.ts

src/reader/cif/schema/ddl.ts

src/reader/cif/schema/dic.ts

src/reader/cif/schema/mmcif.ts

src/reader/cif/schema/utils.ts

src/reader/cif/text/field.ts

src/reader/cif/text/parser.ts

src/reader/common/binary/column.ts

src/reader/common/column.ts

src/reader/common/text/column/fixed.ts

src/reader/common/text/column/token.ts

src/reader/spec/cif.spec.ts

src/reader/spec/column.spec.ts

src/script.ts