Support `strictNullChecks` option (#415)
Support `strictNullChecks` option (#415)


TypeStrong/typedoc,dominic31/typedoc,sebastian-lenz/typedoc,sebastian-lenz/typedoc,PolymerLabs/typedoc,dominic31/typedoc,dominic31/typedoc,PolymerLabs/typedoc,TypeStrong/typedoc,TypeStrong/typedoc,sebastian-lenz/typedoc,PolymerLabs/typedoc