Things to do on mtk :-

Priority
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Next release?
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- ** as well as ^ for power

- Add sqrt function

- Change graphing to cope with singularities

- Apply sig fig option to power series too.

- Add some more details to the tidy up and tree to text routines 
  ( e.g. tidy -1sin x, x+x )

- Scroll window to show current equation

Sometime?
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- Handle fractions

- Check freeing of objects when throwing exceptions and other memory leaks

- More general graphing, multiple graphs, no limit on lines per graph,  
  better printing, better axes.

- Optimize equation drawing routines

- Change from consts to enums for function ??

- Open straight into enter equation mode?

- Go through and check equation and parser code to tidy and improve it

- Online help? Html?

- Proper output window? (Look for feedback)

- Printing out graphs properly (waiting for full libqt support)

- More general series ??

- Status bar ?

- Extend icon bar and make it configurable ??

- Better error checking on loading files

- More flexible saving / loading so only some equations need be saved.

- Icon for mtk
