VTL - Clause operators

Name	Symbol	InMemory	WebAssembly
Filtering Data Points	filter	❌	❌
Calculation of a Component	calc	❌	❌
Aggregation	aggr	❌	❌
Maintaining Components	keep	❌	❌
Removal of Components	drop	❌	❌
Change of Component name	rename	❌	❌
Pivoting	pivot	❌	❌
Unpivoting	unpivot	❌	❌
Subspace	sub	❌	❌