Allow non overlapping annotations

[mrclmr]

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
 ↑  └──┬───┘          └───┬───┘                 ↑
 │     └─ adjective       │                     └─ comma
 │                        │
 └─ article               └─ facts, information, and skills acquired
                             through experience or education;
                             the theoretical or practical understanding
                             of a subject.

[mrclmr]

Version v.0.4.0 has ranged annotations. This can also be seen the example in the README.md.

See #7