fixed: the pad window didn't take into account following options (from display tab):

grouping, input commas and parameter separators
added:   some more info on update dialog (when the update is not available)


git-svn-id: svn://ttmath.org/publicrep/ttcalc/trunk@257 e52654a7-88a9-db11-a3e9-0013d4bc506e

CHANGELOG

@@ -1,3 +1,30 @@
+Version 0.9.1 prerelease (2009.12.05):
+    * fixed:   the pad window didn't take into account following options (from display tab):
+               grouping, input commas and parameter separators
+               
+	Changes from TTMath 0.9.1 prerelease relating to TTCalc:
+    * fixed:   the parser didn't use characters for changing the base (# and &)
+               those characters were skipped
+               (this bug was introduced in 0.9.0)
+    * added:   to Big::ToString() - additional rounding when conv.base_round is used
+               if the value is not an integer we calculate how many valid digits there are
+               after the comma operator (in conv.base radix) and then we skipped the rest
+               digits, after skipping the base-rounding is made
+               this helps to print values which have some last clear bits in the mantissa
+               consider this 32 bit value:
+               (binary)0.00011100001010001111010111000000000
+               which has mantissa equal: (binary)11100001010001111010111000000000 (32 bits)
+               previous the ToString() method gave: (decimal)0.10999999[...] 
+               now we have: (decimal)0.11
+    * added:   Parser::SetSmallToZero(bool zero) (default true)
+               if true then the parser changes small values into zero
+               small value means:
+               - if the mantissa of the value consists only of one, two or three set bits
+               - and these bits are next to each other
+               - and the exponent is smaller than about 2 times the number of bits from the mantissa
+               this helps to correctly calculate expressions such as: "0.80-3*0.34+0.22"
+               now the parser gives zero (previous there was a value very closed to zero)
+
 Version 0.9.0 (2009.11.25):
     * fixed:   when 'C' button was pressed, the cursor was not placed in the edit window
     * added:   Pad window - a multiline edit window