Do not enforce noexcept on virtual function mapColor

This was totally inconsistent with the rest of public virtual functions. This does not break already existing code.

Author: magiblot

README.md

@@ -698,7 +698,7 @@ if (delta.y + i < fileLines->getCount()) {
 }
 writeBuf( 0, i, size.x, 1, b );
 ```
-The overload of `moveStr` used here is `TDrawBuffer::moveStr(ushort indent, TStringView str, TColorAttr attr, ushort maxStrWidth, ushort strIndent)`. This function not only provides Unicode support, but also helps us write cleaner code and overcome some of the limitations previously present:
+The overload of `moveStr` used here is `TDrawBuffer::moveStr(ushort indent, TStringView str, TColorAttr attr, ushort maxStrWidth, ushort strIndent = 0)`. This function not only provides Unicode support, but also helps us write cleaner code and overcome some of the limitations previously present:
 
 * The intermediary copy is avoided, so the displayed text is not limited to `maxLineLength` bytes.
 * `moveStr` takes care of printing the string starting at column `delta.x`. We do not even need to worry about how many bytes correspond to `delta.x` columns.
@@ -1099,7 +1099,7 @@ So, in general, there are three ways to use extended colors in views:
 
 ```c++
 // The 'TMyScrollBar' class inherits from 'TScrollBar' and overrides 'TView::mapColor'.
-TColorAttr TMyScrollBar::mapColor(uchar index) noexcept
+TColorAttr TMyScrollBar::mapColor(uchar index)
 {
     // In this example the values are hardcoded,
     // but they could be stored elsewhere if desired.

include/tvision/views.h

@@ -409,9 +409,9 @@ class TView : public TObject, public TStreamable
     virtual void endModal( ushort command );
     virtual ushort execute();
 
-    TAttrPair getColor( ushort color ) noexcept;
+    TAttrPair getColor( ushort color );
     virtual TPalette& getPalette() const;
-    virtual TColorAttr mapColor( uchar ) noexcept;
+    virtual TColorAttr mapColor( uchar );
 
     Boolean getState( ushort aState ) const noexcept;
     void select();

source/tvision/mapcolor.cpp

@@ -17,7 +17,7 @@
 #define Uses_TGroup
 #include <tvision/tv.h>
 
-TColorAttr TView::mapColor( uchar index ) noexcept
+TColorAttr TView::mapColor( uchar index )
 {
     TPalette& p = getPalette();
     TColorAttr color;

source/tvision/tview.cpp

@@ -479,7 +479,7 @@ TRect TView::getClipRect() const noexcept
     return clip;
 }
 
-TAttrPair TView::getColor( ushort color ) noexcept
+TAttrPair TView::getColor( ushort color )
 {
     TAttrPair colorPair = color >> 8;