fix: Read parameters

[koubaa]

Partial fix for #641 and #711

Fixes #723

• Add multi-line include for *INCLUDE_PATH using the same mixin as *INCLUDE. (now filename is used rather than path which is not ideal, but we can look at that later)
• Support negative parameters using -&
• *PARAMETER has a 1-dimensional series of parameters, not a table.
• codegen for series card is moved to its own file (continuing the refactoring to split all of them)
• Implement an import handler that reads parameters into the keyword deck after importing. This is not yet recursive and doesn't handle the _LOCAL option.