- Fix `c_intdiv` to work on numpy arrays
 - Fix bool type parsing
 - Fix typification of relationals and int/bool ops in vector contexts
 - Extensive corrections and additional tests for constant elimination in vector contexts

 - fix printing errors
 - add basic handling of vector ops in constant folder
 - add predicate-based loop vectorization
 - disable int muls on intel
 - fix integer vec broadcast on intel
 - started work on vector kernel testsuite

 - Implement PsAssignment vectorization
 - Add test cases for assignments
 - Add test cases to cover edge cases
 - Add documentation on AstVectorizer

 - stride of `PsVecMemAcc` can now be an expression
 - define `PsAstNode.__str__` to call the IR printer
 - fix IR printing of some nodes
 - Implement vectorization of PsBufferAcc.

 - Split off BasePrinter from CAstPrinter
 - Start implementing separate IRAstPrinter for debug printing
 - Start constructing the AstVectorizer for expressions

Refactor Field Modelling

See merge request pycodegen/pystencils!421

Revised Array Modelling & Memory Model

See merge request pycodegen/pystencils!420

Clarify semantics of fancy integer division functions.

See merge request pycodegen/pystencils!417

Improve freezing of additions

See merge request pycodegen/pystencils!415

Freeze casts of bare constants to typed PsConstantExprs

See merge request pycodegen/pystencils!411

Refactor Field Indexing Symbols

See merge request pycodegen/pystencils!408

Some minor internal and API fixes

See merge request pycodegen/pystencils!410

Various GPU-related and some general fixes.

See merge request pycodegen/pystencils!405

Change symbol typification: Infer unknown LHS data types from RHS

See merge request pycodegen/pystencils!407

Fundamental GPU Support

See merge request pycodegen/pystencils!384