— Raise the default tolerance for cross-derivatives to 1e-6, to reduce the
  number of false positives

— New option “balanced_growth_test_tol” to the “model” block for changing that
  tolerance

— Turn back test failures into errors. Since there is now an option for
  controlling the tolerance, the user always has the possibility of making the
  test pass.

Closes: dynare#1389

fix bug causing auxiliary variables for pac growth parameters not to contain their original symbol id

introduce variableMapping, default equation name tags in M_ and JSON output

See merge request Dynare/preprocessor!3

These functions should have been deleted in
946d105c.

In many cases, they can be replaced by the curly braces syntax.

Otherwise, we can now use the pair() and tuple() constructors, without the need
to specify template parameters, thanks to class template argument
deduction (new in C++17).

This is made possible by the getLagEquivalenceClass() method introduced in the
previous commit.

Previously, the static version of the LHS expressions was used.

As a consequence, drop ModFile::diff_static_model, now useless.

Previously, for testing whether two diff() expressions or two unary ops were
the lead/lag of each other, the preprocessor would test whether they have the
same static representation. This is ok for simple expressions (e.g.
diff(x(-1))), but not for more complex ones (e.g. diff(x-y) and diff(x(-1)-y)
should not be given the same auxiliary variable).

This commit fixes this by properly constructing the equivalence relationship
and choosing a representative within each equivalence class. See the comments
above lag_equivalence_table_t in ExprNode.hh for more details.

Closes #27

Those methods can return a negative value in some cases. For example,
maxLead(x₋₁) = −1.

But constants were always returning a value of zero, which means that we had
inconsistent behaviour like maxLead(x₋₁ + 2) = 0.

This commits fixes the behaviour by making these methods return the smallest
possible integer when called on constants.

The cache in ~/tarballs on the runner is shared with the jobs of the main
dynare repository that create the Windows and macOS packages.

Also use better options for wget.

Closes #34

Windows{32,64}, Linux{32,64} and macOS{64}, also generates
informations required by the Julia package.

fix bug in `fast` option: printing temporary terms hid changes in model when the temporary term changed as the temporary terms themselves were not printed. closes dynare#1661

Furthermore, modifications to model local variables were not taken into account.

To fix, take checksum of model local variables, temporary terms, and equations

Also, use existing functions to print these to a stringstream instead of repeating print functionality in this function

implicit conversion from `filesystem::path` to `string` not supported even though it's in the standard

ancillary to this change is the move of `paths` out of the Driver class into an argument to parsing/evaluation #32