.0 is ignored in doubles in toSNBT

Example, tag has a double value: `20.0`
After using `SNBTUtil.toSNBT(tag)`, the value turns to `20`.
After trying to convert it back to Tag it will throw an error.
Example:
```
 net.querz.nbt.io.ParseException: cannot add IntTag to ListTag<DoubleTag> at: ...ore":0,"Pos":[-301.5592469090256,72<--[HERE]
```
