Changes to 1.0.7

* SYNTAX: Added a possibility to exactly specify which variables are copied
  into a function's extra dictionary when it is being returned.
    E.g. "`(x) [x0] = (x-x0)" will copy x0 from the current context.  This
  is a lot more efficient than the current behaviour which tries to copy
  everything referenced.
* SYNTAX: Add "local" variables by specifying "local x,y,z" or "local *" as
  the first statement in a function.  Local variables are not visible from
  higher contexts (functions called within)
* CHANGE: all system parameters are now protected and cannot be redefined
  using the "parameter" keyword
* Add UserVariables, UndefineAll, ProtectAll, and add Undefine as an alias to
  undefine.
* Add trigonometric Fourier series related functions:
  NumericalFourierSeriesFunction, NumericalFourierSineSeriesFunction,
  NumericalFourierCosineSeriesFunction, FourierSeriesFunction,
  NumericalFourierSeriesCoefficients, NumericalFourierSineSeriesCoefficients,
  NumericalFourierCosineSeriesCoefficients, PeriodicExtension,
  EvenPeriodicExtension, OddPeriodicExtension
* Fix changing floating point precision!
* Fix uninitialized variable in graphing (Matthias Drochner)
* Improve variable substitution for returned functions to be more efficient.
  Slightly changes behaviour with respect to global functions and variables
  used.
* Plot windows now not treated annoyingly as dialogs
* Fix compilation/decompilation of all function attributes.
* Parse/Evaluate with a syntax error at end of string no longer terminate
  genius
* Updated Mersenne stuff for the newest data from mersenne.org and
  fix MersennePrimeExponents
* Fix opening new files from the command line.
* Update the gel library to use the new language features.
* Various other minor fixes
* Translation updates (Philip Withnall, Jen Ockwell,
  Rodrigo Luiz Marques Flores, Daniel Nylander, Mario Blättermann, me)

* For some of the changes the author (Jiri) was partially supported by
  NSF grant DMS 0900885 and the University of Illinois at Urbana-Champaign