28/Feb/2017
  Correction of text label. (Thanks David for pointing this out!)

18/Jan/2017
  Releases for 2017/18

7/Apr/2016
  Releases for 2016/17
  Updated student loan to allow selection of thresholds for Plan1/Plan2

12/Feb/2015
  Preliminary releases for 2015 to 2016

19/Apr/2014
  Released 2014 to 2015 spreadsheet.

25/Jun/2013
  Released 2013 to 2014 spreadsheet.
  Pension contributions now taken into account when calculating taper.
  Thank you to AJ, Mike H and Matt for pointing this out.

11/Jun/2012
  Corrected value for student loan repayment threshold which has increased
  from £15,000 to £15,795. (http://www.hmrc.gov.uk/paye/rates-thresholds.htm#5)
  Thanks to Martin for pointing this out.

01/Jan/2012
  Released preliminary 2012 to 2013 spreadsheet.

29/Oct/2011
  Added Age related allowances and stop to NI at state pension age.
  Added student loan deduction option
  Added blind persons allowances
  Added facility to specify standard pension contributions.
    (I believe the rules are different if you do your own pension so this
     may give slightly the wrong answer in that case)

9/Feb/2011
  Fixed off-by-penny error on tax bands which caused calculated income tax to 
  be off by a few pence.

  Adjusted column widths for Excel version

2/Feb/2011 
  Released 2011/2012 sheet based on newly published tax/NI bands.