v7.28.0

Symbolics v7.28.0

Diff since v7.27.0

Merged pull requests:

• docs: update FnType documentation (#1896) (@TZdyrski)
• LinearExpander: removed unused variable (#1898) (@KristofferC)
• allow not rebuilding the remainder in linear expander (#1900) (@KristofferC)
• build: bump minor version (#1901) (@AayushSabharwal)

Closed issues:

• FnType type in variable throws MethodError (#1885)