caracas 1.1.2

sympy_func(x, fun) first tries calling fun on x; and if it does not exist it tries from the global namespace
New function: mat_pow() for raising a matrix to a power (not component-wise), requires SymPy >= 1.6
New function: expand_func() added
Added rev() for caracas_symbol’s
Bug with Ops (functions) fixed
SymPy 1.9 bug with elementwise matrix multiplication (https://github.com/sympy/sympy/issues/22353) addressed
Enabling pretty ASCII print option (options(caracas.print.prettyascii = TRUE)) instead of UTF-8, if the system locale is not UTF-8; this be disabled with options(caracas.print.prettyascii = FALSE)

caracas 1.1.1

Global symbol assignment by def_sym() (#18)
Linear algebra: New do_la() function with convinience functions like eigenval(), eigenvec(), QRdecomposition(); new vignette demonstrating these
Assumptions being made available, see e.g. symbol() and ask()
Arbitrary precision arithmetic: N() function and vignette on “Arbitrary precision arithmetic”
Rename eigen_val()/eigen_vec() to eigenval()/eigenvec()
More clear naming convention: R has expressions and caracas has symbols; in this connection as_r() was renamed to as_expr() and as_symbol() to as_sym(). Also, as_sym() changed argument from declare_variables to declare_symbols.
Changed internals such that der(), der2() and solve_sys() now takes multiple variables with list() (or as a vector symbol) instead of c(); see also matrify() and listify()
Added diag_() and matrix_() (postfix _ to avoid name clashes)
sumf() renamed to sum_() and prodf() to prod_() (postfix _ to avoid name clashes)
intf() renamed to int() and limf() to lim() (because there are no name clashes with base R)
Call SymPy functions directy with sympy_func()
Added taylor() and drop_remainder()
Minor bugs fixed

An entire new interface for using SymPy, including symbols, symbolic matrices, solving equations, limits and lots of other functionality.