Most notable features:
* More files are supported files types (eps,ps,pdf, svg, png,jpg,tex), but some are gone (gif, tif, root)
* Added more environments: display, inline(which were before), align and text.
* Added button "Reset Defaults" in the Preferences dialog
* Now Preamble can be toggle from a button in mainwindow
* Reported errors by latex output are highlighted in Equation editor and
Preamble editor. A nice sign shows along the line number also.
* modified UI mainwindow and polished it for better smaller layout
* Added a nice preloader to show instead of the equation while the RenderEngine generates the files
* Added a context actions menu (copy/paste) for the Preview
* Default export can be changed in the preferences dialog to any supported files (eps,ps,pdf, svg, png,jpg,t...