Enable pretty color printing in gnome-terminal

`term` crate has an issue reading terminal properties in gnome-terminal:
Stebalien/term#81

This was fixed in term v0.5.0. Bump version of dependencies `term` and
`prettytable-rs` to use `term` v0.5.* and do minor fixes to use new
`prettytable-rs` API.

Cargo.toml

@@ -11,10 +11,10 @@ keywords = ["cryptocurrency", "ticker", "bitcoin", "ethereum"]
 [dependencies]
 clippy = { version = "*", optional = true }
 termion = "1.5.1"
-term = "0.4.6"
+term = "0.5"
 reqwest = "0.9"
 serde = "1.0"
 serde_json = "1.0"
 serde_derive = "1.0"
 clap = {version = "2.29", features = ["yaml"]}
-prettytable-rs = "0.6.7"
+prettytable-rs = "0.8"

src/cell.rs

@@ -1,4 +1,4 @@
-use prettytable::cell::Cell;
+use prettytable::Cell;
 use term::{color, Attr};
 
 pub struct LayoutCell {

src/layout.rs

@@ -4,8 +4,7 @@ use cell::LayoutCell;
 use currency;
 use currency::Currency;
 
-use prettytable::Table;
-use prettytable::row::Row;
+use prettytable::{Table, Row};
 
 pub struct Layout<'a> {
     headers: Vec<String>,
@@ -43,7 +42,7 @@ impl<'a> Layout<'a> {
     }
 
     pub fn print(&self) {
-        self.get_table().print_tty(false)
+        self.get_table().print_tty(false);
     }
 
     pub fn get_table(&self) -> Table {