Using Parsers for faster parsing

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 90.90909% with 2 lines in your changes missing coverage. Please review.

Project coverage is 66.70%. Comparing base (2ae4d98) to head (a627b99).

Files	Patch %	Lines
src/io.jl	90.90%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #55 +/- ## ======================================= Coverage 66.70% 66.70% ======================================= Files 12 12 Lines 2394 2394 ======================================= Hits 1597 1597 Misses 797 797 ```

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