Adding missing data type keywords:

[robdaemon]

Adds the following data type keywords: Int8, Int16, Int32, UInt8, UInt16, UInt32, IntPtr, UIntPtr

[alefragnani]

Hi @robdaemon ,

First of all, thank you for your PR.

Just out of curiosity, in which Pascal flavor are these data types available? Delphi, FreePascal, Oxygene?

Thank you

[robdaemon]

@alefragnani Sorry for the delayed response. These are from Free Pascal.

type UInt32 = Cardinal;
type UInt64 = QWord;
type UInt8 = Byte;
type UInt16 = Word;

[alefragnani]

Hi @robdaemon ,

No need to be sorry. The question was only to properly document in the release notes 😬

Thank you