0.9.2
- optimized parser algorithms
- improved graph management
- graph calculation with multithreading support

0.9.1
- added constants and conversation list
- dialogs for import and export of graphs
- added support of logic operations and script commands in graphs
- program language can be changed after installation

0.9.0
- optimized preprocessor routines
- added support for macros
- updated user interface
- added french translation

0.8.5 statistic functions
- added statistics window
- added function approximation and interpolation modules
- added module for drawing line graphs
- added statistics modules for gaussian normal distribution and distribution
graphs
- fixed bug in matrix module

0.8.0 user interface for matrices and vectors
- added matrix/vector window
- added modules for vector/matrix generation and analysis
- added module for solving linears systems of equations
- added module for calculation of inverse matrix
- added script interpreter commands for file usage
- integrated 3D-graphics window into script console
- added script commands for OpenGL usage
- updated table window

0.7.0 vector, matrix, complex numbers
- modified script parser algorithms to support matrix and vector atrithmetics
- added possibility to switch complex numbers on and off
- changed internal Number structure
- redesigend script editor
- added example scripts for matrix and vector arithmetics
- updated documentation

0.6.5 complex numbers
- rewritten calculator algorithms to support complex numbers
- added performance preferences dialog
- installer generates menu entery
- fixed some bugs, updated documentation

0.6.0 bugfixing
- added text draw function (in graph drawing window)
- updated menu structure
- fixed bugs in calculator, main window, graph analysation, preferences
dialogs
- updated translation
- updated documentation

0.5.5 save and modify graphs
- functions for saving screenshot of graphics window added
- support for several image formats and sizes added
- added function for drawing into graphics window
- support for free draw, lines, rectangles and circles included

0.5.1 zooming and moving graphs
- modified routines for graph drawing
- standard coordinate system can be moved by pressing right mouse button
- standard coordinate system and polar coordinate system can be zoomed by the
mouse wheel

0.5.0 full scripting support
- new scripting commands break, continue stop
- script interpreter supports arrays
- executing a script from another script is possible
- script parser shows all parse errors and their position in the code
- improved script interpreter
- fixed some memory leaks in script interpreter and calculator

0.4.5 improved scripting functions
- new commands: for loop, type converting
- input and output functions (print, getkey, getline, keystate, clear, setcursor)
- added script console window for running scripts
- updated documentation, added script code examples

0.4.2 Script editor widget finished
- added fully-functional editor widget
- creates and manages workspace
- saves, loads removes, creates files and directories
- script execute feature activated
- basic functions (if, while, brackets, compare operators) activated

0.4.1 Menubar updated
- filled file-menu
- added edit-menu with standard-items
- added view-menu to show or hide the different tabs
- added script editor widget 
- added script preferences widget
- created assistet for initial configuration

0.4.0 Graph analysation updated
- bugs in some analysation methods fixed
- modified analysation method for inequaity functions
- added support for analysation of 3D-functions and parameter functions 

0.3.0 first 0.3 release
- completed table functions
- added table preferences menu and dialogs
- fixed some bugs in graph drawing and function tables

0.2.4 dynamic graphs
- It is possible to use every type of graph in a dynamic mode
- graphic preferences dialog uses tabs now
- added table window

0.2.3 3D-graphics enabled
- Added support for 3D-coordinate system
- enabled 3D-graphs
- updated preferences dialogs for 3D coordinate system
- updated graph solving functions
- modified parser algorithm to run on systems with support for long double calculations as well as 
  on systems without this

0.2.2 added features for polar coordinate system and parameter functions
- bugs in mathematical parser fixed
- added features for drawing polar coordinate systems
- updated graphics outupt window to processs polar functions and parameter functions
- updated graphics analysation window for polar functions (no analysation of parameter functions yet)
- updated preferences dialogs and preferences storing system

0.2.1 bugfixes and changes in GUI
- calculator preferences dialog added
- Problem with installation on Suse Linux 8.2 fixed
- documentation rewritten

0.2.0 first release with logic functions
- base-n calculaton
- logic functions
- completely rewritten parser and calculaton algorithms without QT
- parser compatible to calc project
- calculator works with higher precisision
- program modified to run on 64Bit systems

0.1.1 bugfix update for 0.1.1
- bug in calculator preferences menu fixed
- grapic preferences menu added

0.1.0 initial version
- GUI for calculator
- GUI for graphics
- graphics drawing with OpenGL
- Analysation of graphs
- mathematical parser
- accerelated parser for grapic calculations
- integration
- differentiation
- menu for calculator preferences
- dialog for graphic preferences
- short documentation in english and german
