Nested formatting causing weird issues

**input**
```
***hello***
```
**actual**
```
hello
```
**expected**
https://babelmark.github.io/?text=***hello***
```
hello
```

And one other, even weirder, case (heading being nested inside formatting from the previous line)

**input**
```
***hello***

## Heading
```
**actual**
```
hello

Heading

```
**expected**
https://babelmark.github.io/?text=***hello***%0A%0A%23%23+Heading
```
hello

Heading

```