Tagged version 0.3.2 does not compile with Crystal 1.18.2

[josacar]

When using tagged version 0.3.2 with Crystal 1.18.2, #6 arises, so there's no working tag for latest Crystal release.

When checking with overriding term-reader with master branch:

Using term-reader (0.3.3 at ffc73f4)

I can build my software and problem is fixed.

Thanks in advance.