bpp_1.0.3
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- Corrected color error in basicPlot() for futility boundary.
- Added wrapper functions for easier use for binary, continuous, and time-to-event endpoint.
  These functions are bpp_binary, bpp_continuous, bpp_t2e, bpp_1interim_binary, bpp_1interim_continuous, bpp_1interim_t2e.
- Renamed datasigma --> interimSE, finalsigma --> finalSE.

bpp_1.0.2
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- Minor updates, removed below option again.

bpp_1.0.1
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- Extended some of the help files.
- Added option "direction" to bpp, bpp_1interim, bpp_2interim.

bpp_1.0.0
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- Initial version.
