Dependency bounds are potentially too loose

[mniip]

After #66 inflections only supports GHC 8.4+ (base >=4.11), however GHC 8.4 and up aren't compatible with any version of text <1.2.3.0, so it's a little odd to claim compatibility with text all the way back to 0.2, if you can't even try out this build configuration. Likewise, GHC 8.4+ restricts you to exceptions >=0.8.3, and unordered-containers >=0.2.9.0