Maxima 5.30 change log

   Changes not backward compatible:

 * function gf_set: renamed to gf_set_data


   Other changes:

 * function bfzeta: extend to complex plane
 * function gf_set: return a structure
 * function gf_exp: allow negative exponents
 * functions plot2d, plot3d: accept subscripted variables as independent variables
 * package dynamics: revise function rk
 * package ezunits: new functions expand_dimensional, solve_dimensional, other changes
 * package linearalgebra(??): revise mat_function
 * ??: revise functions jordan, JF, diag


   Bug fixes:

 ??: limit((log(y+h)-log(y))/h,h,0,plus)
 2561: limit(log(x^2),x,-20) gives 2*log(-20)
 2559:
 2557: abs_integrate leaks assumptions into enclosing context
 2547:
 2542:
 2541: (FIXED??)
 2540:
 2531: Integration with inf
 2529: limit(x^n,x,minf) gives minf for n positive
 2528: imagpart etc. wrong when var declared real and complex
 2527: exponent too big in limit
 2517:
 2509: fresnel_s incorrect for small values
 2496:
 2458: to_poly_solve gives a wrong solution for cos(x)=sin(3x)
 2449: cabs(expr) fails when expr is 0
 2442: arrayinfo gives a Lisp error
 2441: 
 2412: Problems with integral (x/(exp(x)+1),x,0,inf)
 2362:
 2350:
 2279:
 2219: tex2ooo literals format
  472: ctrl-D causes Maxima debugger to loop endlessly (clisp only)


 unnumbered bugs:

 mailing list circa 2013-03-30: load_pathname unset with maxima -b
 mailing list 2013-02-21: gamma_incomplete_regularized(a,0) returning the wrong noun form
 mailing list 2012-12-23: "let(simp) behaves different when loaded from batch file"
 mailing list 2012-12-14: "Maxima won,t pull out a constant from a linear function"
 bern() with zerobern:false
 clean up facts introduced by sign functions