ensure inspect follows the standard representation

# Conflicts:
#	CHANGELOG.md
#	lib/sql.ex

Author: Schultzer

CHANGELOG.md

@@ -15,6 +15,7 @@
  - MySQL adapter [#5](https://github.com/elixir-dbvisor/sql/pull/5).
  - PostgreSQL adapter [#5](https://github.com/elixir-dbvisor/sql/pull/5).
  - TDS adapter [#5](https://github.com/elixir-dbvisor/sql/pull/5).
+ - Ensure inspect follows the standard [representation](https://hexdocs.pm/elixir/Inspect.html#module-inspect-representation) [#4](https://github.com/elixir-dbvisor/sql/pull/4)
 
 ### Deprecation
  - token_to_sql/2 is deprecated in favor of SQL.Token behaviour token_to_string/2 [#5](https://github.com/elixir-dbvisor/sql/pull/5).

lib/sql.ex

@@ -99,10 +99,12 @@ defmodule SQL do
 
   defimpl Inspect, for: SQL do
     def inspect(sql, _opts) do
+      string = "#SQL<#{to_string(sql)}"
+      string = String.pad_trailing(string, byte_size(string)+2, ";>")
       if Kernel.function_exported?(sql.module, :config, 0) do
-        Enum.reduce(0..length(sql.params), to_string(sql), &String.replace(&2, sql.module.config()[:adapter].token_to_string({:binding, [], [&1]}), sql.module.config()[:adapter].token_to_string(Enum.at(sql.params, &1)), global: false))
+        Enum.reduce(0..length(sql.params), string, &String.replace(&2, sql.module.config()[:adapter].token_to_string({:binding, [], [&1]}), sql.module.config()[:adapter].token_to_string(Enum.at(sql.params, &1)), global: false))
       else
-        Enum.reduce(0..length(sql.params), to_string(sql), &String.replace(&2, SQL.String.token_to_sql({:binding, [], [&1]}), SQL.String.token_to_sql(Enum.at(sql.params, &1))))
+        Enum.reduce(0..length(sql.params), string, &String.replace(&2, SQL.String.token_to_sql({:binding, [], [&1]}), SQL.String.token_to_sql(Enum.at(sql.params, &1))))
       end
     end
   end

test/sql_test.exs

@@ -37,7 +37,7 @@ defmodule SQLTest do
   end
 
   test "inspect/1" do
-    assert "select +1000" == inspect(~SQL[select +1000])
+    assert "#SQL<select +1000;>" == inspect(~SQL[select +1000])
   end
 
   test "to_sql/1" do