Wrong type in header vs cpp

[Gejakem]

V0.4.7
The declaration of TinyString in cpp doesn't match the header.

TinyString.cpp line 75
Current: TinyString& TinyString::operator+=(int i)

TinyString.h, line 59
Declaration in header is this: TinyString& operator +=(int32_t);

New in cpp should be: TinyString& TinyString::operator+=(int32_t i)