6.2.0

• New extension methods:

bool IsAsciiLetterLower(this char);
bool IsAsciiLetterUpper(this char);
bool IsAsciiDigit(this char);
bool IsAsciiLetterOrDigit(this char);
bool IsAsciiHexDigit(this char);
bool IsAsciiHexDigitLower(this char);
bool IsAsciiHexDigitUpper(this char);
bool IsBetween(this char, char, char);

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• Obsolete extension methods:

bool IsAsciiLowerCaseLetter(this char);
bool IsAsciiUpperCaseLetter(this char);
bool IsDecimalDigit(this char);

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Project reference: On some systems, the content of the CHM file in the Assets is blocked. Before opening the file right click on the file icon, select Properties, and check the "Allow" checkbox - if it is present - in the lower right corner of the General tab in the Properties dialog.