Release v0.2.4 - Dynamic spacing while editing

Bug fixes:

- CHS removes negative sign instead of putting a + sign
- Fix crash when applying decimal functions to negative values (#101)
- Use default formatting when saving calculator state
- Repair rendering of FIX, SCI and ENG on the stack (#100)
- Fixes the selection of the editor's displayed rows and columns (#98, #99)
- Remove premature "too many digits" error message for decimal128 (#97)
- Do not terminate editing for self-inserting menus such as `#` (#96)
- Show B cursor for all base-36 digits (#95)
- Defensive coding against malformed UTF8 text rendering (#101)

Features:

- Show thousand separators while editing numnbers
- Render based numbers with a numerical postfix base indicator (#95)
- Parse numbers in arbitrary base, e.g. `3#212` (#95)

Signed-off-by: Christophe de Dinechin <christophe@dinechin.org>

Author: c3d

STATE/Test.48S

@@ -1,3 +1,9 @@
+« 0 0 7199 
+for i
+	i 180. ÷ 3.14159265358979323846 × sin exp +
+next »
+'DM32' STO
+
 « Ticks 0 
 do
 	8 Swap 1 + 
@@ -56,4 +62,4 @@ end Drop »
 'Fact' STO
 
 VariablesMenu
-ClassicExponent
+5 FractionSpacing

src/qspi_crc.h

@@ -1,4 +1,4 @@
 
-#define QSPI_DATA_SIZE  1514276
+#define QSPI_DATA_SIZE  1514292
 #define QSPI_DATA_CRC  0x000cfed6