2015-04-07 (v1.0.1)
  * inst/RheaData_v60.txt: Updated Rhea database to version 60.

  * man/rs.makeDB.Rd: Updated version of Rhea database. Updated references.

  * man/rs.mask.Rd: Updated man entry to reflect changes in the rs.mask and
  ms.mask functions.

  * R/RxnSim.R (makeDB): 
    - Replaced read.delim with fread from data.table package in rs.makeDB
    function.
    - Handled error 'Too many paths generate...' arising from cdk. Removes
    reaction from database.

  * R/RxnSim.R (computeDB): optimization of code to avoid use of rbind.

  * R/RxnSimHelper.R (.similarity):
    - Handled error 'Too many paths generate...' arising from cdk. Returns NaN.
    - Enhanced verbose mode to print compound smiles.

  * R/RxnSim.R (.calcSimMapping): optimization of code to avoid use of rbind.

  * R/RxnSimMask.R: Introduced option to standardize and add explicit hydrogens
  in ms.mask and rs.mask functions.