`int` may be < 64 bit, and some dap protocols use a 64 bit integer. Chnage to `int64_t` to be consistent. Fixes: #45
On windows text mode for these plays with newline escape sequences, breaking the ContextStream encoding. Fixes: #12
Without this the vscode extension cannot find the example executable, and the example fails. Also use $USERPROFILE instead of $HOME for finding the `.vscode` user directory for installing the extension. Bug: #12