Comparison of string with number starting or ending with a space is incorrect

```cpp
Value a = 1.25;
Value b = " 1.25";
Value c = "1.25 ";

bool eq1 = (a == b); // false
bool eq2 = (a == c); // false
```
Expected behavior:
```cpp
bool eq1 = (a == b); // true
bool eq2 = (a == c); // true
```