Version 0.3:
- show in the statusbar the position of the cursor in the text edit
- the preview image (in PDF format) is displayed using poppler instead
  of converting the PDF file to PNG first and displaying the PNG file
  (poppler version 0.5.4 is used)
- added zooming of the image (using poppler)
- export to PNG is done directly in Qt now; as a consequence (of this
  and of using poppler to display the preview image) ktikz no longer
  depends on ImageMagick
- added "Open Recent" menu
- if ktikz is run on the command line, then it loads the first argument
  (if it is a valid file name)
- the open/save file dialog remembers the last directory in which a
  PGF source file was opened/saved
- loading of translations if available
- added French translation
- changed qmake files so that the files will be installed in the correct
  place (the installation prefix can be configured in the file conf.pri)
- the wait cursor is displayed while typesetting the PGF picture to PDF
Version 0.2:
- replaced the icons in XPM format by icons in PNG format from KDE4's
  Oxygen theme (obtained from
  svn://anonsvn.kde.org/home/kde/trunk/KDE/kdelibs/pics/oxygen)
- placed the text edit and the preview area in a splitter so that their
  relative width can be changed by the user
- placed the log text edit in a dockwidget (which can be hidden)
- temporary files are now put in QDir::tempPath() + "/ktikz"
  (on Linux this is /tmp/ktikz), so your working directory remains clean
- closing the application now removes all temporary files and stops the
  thread
- the first time that the thread (generating the output image) is
  executed is not on startup anymore, but when the user actually
  changes the text or loads a file
- images can now be exported to EPS, PDF and PNG
- for some standard actions, the standard key sequence is used (e.g.
  QKeySequence::Open instead of Ctrl+O)
- the toolbars can be hidden
- corrected typo "TiKz" to "TikZ"
- a function runProcess is used which makes the code of generatePdfFile
  and generatePngFile easier (in tikzpngpreviewer.cpp)
- made a better about dialog
