Added namespaces to most classes, general cleanup

tests/parser/LexerTests.cpp

@@ -3,6 +3,7 @@
 #include <codecvt>
 #include <locale>
 #include "../../src/Parser/Lexer.hpp"
+using namespace Porygon::Parser;
 
 TEST_CASE( "When at end of script return terminator", "[lexer]" ) {
     Lexer lexer = Lexer(u"", nullptr);

tests/parser/ParserTests.cpp

@@ -3,6 +3,7 @@
 #ifdef TESTS_BUILD
 #include <catch.hpp>
 #include "../../src/Parser/Parser.hpp"
+using namespace Porygon::Parser;
 
 TEST_CASE( "Parse single true keyword", "[parser]" ) {
     vector<const IToken*> v {new SimpleToken(TokenKind::TrueKeyword,0,0), new SimpleToken(TokenKind::EndOfFile,0,0)};