diff --git a/src/common.rs b/src/common.rs
index ba253dc..79ece8e 100644
--- a/src/common.rs
+++ b/src/common.rs
@@ -1,183 +1,5 @@
-use std::convert::TryFrom;
 use std::fmt::{self, Display};
 
-#[derive(Copy, Clone, Debug, Eq, PartialEq)]
-pub enum Symbol {
-    /// .
-    Period,
-    /// #
-    Hash,
-    /// @
-    At,
-    /// $
-    Dollar,
-    /// (
-    OpenParen,
-    /// )
-    CloseParen,
-    /// {
-    OpenCurlyBrace,
-    /// }
-    CloseCurlyBrace,
-    /// [
-    OpenSquareBrace,
-    /// ]
-    CloseSquareBrace,
-    /// ,
-    Comma,
-    /// +
-    Plus,
-    /// -
-    Minus,
-    /// *
-    Mul,
-    /// /
-    Div,
-    /// :
-    Colon,
-    /// ;
-    SemiColon,
-    /// ~
-    Tilde,
-    /// >
-    Gt,
-    /// <
-    Lt,
-    /// ^
-    Xor,
-    /// =
-    Equal,
-    /// |
-    BitOr,
-    /// &
-    BitAnd,
-    /// %
-    Percent,
-    /// "
-    DoubleQuote,
-    /// '
-    SingleQuote,
-    /// ?
-    QuestionMark,
-    /// \
-    BackSlash,
-    /// `
-    BackTick,
-}
-
-impl Display for Symbol {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            Self::Period => write!(f, "."),
-            Self::Hash => write!(f, "#"),
-            Self::At => write!(f, "@"),
-            Self::Dollar => write!(f, "$"),
-            Self::OpenParen => write!(f, "("),
-            Self::CloseParen => write!(f, ")"),
-            Self::OpenCurlyBrace => write!(f, "{{"),
-            Self::CloseCurlyBrace => write!(f, "}}"),
-            Self::OpenSquareBrace => write!(f, "["),
-            Self::CloseSquareBrace => write!(f, "]"),
-            Self::Comma => write!(f, ","),
-            Self::Plus => write!(f, "+"),
-            Self::Minus => write!(f, "-"),
-            Self::Mul => write!(f, "*"),
-            Self::Div => write!(f, "/"),
-            Self::Colon => write!(f, ":"),
-            Self::SemiColon => write!(f, ";"),
-            Self::Tilde => write!(f, "~"),
-            Self::Gt => write!(f, ">"),
-            Self::Lt => write!(f, "<"),
-            Self::Xor => write!(f, "^"),
-            Self::Equal => write!(f, "="),
-            Self::BitOr => write!(f, "|"),
-            Self::BitAnd => write!(f, "&"),
-            Self::Percent => write!(f, "%"),
-            Self::DoubleQuote => write!(f, "\""),
-            Self::SingleQuote => write!(f, "'"),
-            Self::QuestionMark => write!(f, "?"),
-            Self::BackSlash => write!(f, "\\"),
-            Self::BackTick => write!(f, "`"),
-        }
-    }
-}
-
-impl TryFrom<char> for Symbol {
-    type Error = &'static str;
-
-    fn try_from(c: char) -> Result<Self, Self::Error> {
-        match c {
-            '.' => Ok(Self::Period),
-            '#' => Ok(Self::Hash),
-            '@' => Ok(Self::At),
-            '$' => Ok(Self::Dollar),
-            '(' => Ok(Self::OpenParen),
-            ')' => Ok(Self::CloseParen),
-            '{' => Ok(Self::OpenCurlyBrace),
-            '}' => Ok(Self::CloseCurlyBrace),
-            '[' => Ok(Self::OpenSquareBrace),
-            ']' => Ok(Self::CloseSquareBrace),
-            ',' => Ok(Self::Comma),
-            '+' => Ok(Self::Plus),
-            '-' => Ok(Self::Minus),
-            '*' => Ok(Self::Mul),
-            '/' => Ok(Self::Div),
-            ':' => Ok(Self::Colon),
-            ';' => Ok(Self::SemiColon),
-            '~' => Ok(Self::Tilde),
-            '>' => Ok(Self::Gt),
-            '<' => Ok(Self::Lt),
-            '^' => Ok(Self::Xor),
-            '=' => Ok(Self::Equal),
-            '|' => Ok(Self::BitOr),
-            '&' => Ok(Self::BitAnd),
-            '%' => Ok(Self::Percent),
-            '"' => Ok(Self::DoubleQuote),
-            '\'' => Ok(Self::SingleQuote),
-            '?' => Ok(Self::QuestionMark),
-            '\\' => Ok(Self::BackSlash),
-            '`' => Ok(Self::BackTick),
-            _ => Err("invalid symbol"),
-        }
-    }
-}
-
-#[derive(Clone, Debug, Eq, PartialEq)]
-pub struct MediaQuery {}
-
-#[derive(Copy, Clone, Debug, Eq, PartialEq)]
-pub enum Whitespace {
-    Space,
-    Tab,
-    Newline,
-    CarriageReturn,
-}
-
-impl Display for Whitespace {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            Self::Space => write!(f, " "),
-            Self::Tab => write!(f, "\t"),
-            Self::Newline => writeln!(f),
-            Self::CarriageReturn => write!(f, "\r"),
-        }
-    }
-}
-
-impl TryFrom<char> for Whitespace {
-    type Error = &'static str;
-
-    fn try_from(c: char) -> Result<Self, Self::Error> {
-        match c {
-            ' ' => Ok(Self::Space),
-            '\t' => Ok(Self::Tab),
-            '\n' => Ok(Self::Newline),
-            '\r' => Ok(Self::CarriageReturn),
-            _ => Err("invalid whitespace"),
-        }
-    }
-}
-
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
 pub enum Op {
     Equal,
diff --git a/src/lib.rs b/src/lib.rs
index e60f051..f9099ff 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -58,10 +58,9 @@
     // this is too pedantic -- it results in some names being less explicit
     // than they should
     clippy::module_name_repetitions,
-    clippy::option_unwrap_used,
     // this is too pedantic -- it is sometimes useful to break up `impl`s
     clippy::multiple_inherent_impl,
-
+    
     // temporarily allowed while under heavy development.
     // eventually these allows should be refactored away
     // to no longer be necessary
@@ -69,6 +68,7 @@
     clippy::todo,
     clippy::too_many_lines,
     clippy::panic,
+    clippy::option_unwrap_used,
     clippy::result_unwrap_used,
     clippy::result_expect_used,
     clippy::cast_possible_truncation,