Support for locales, (en and it included)

Based on PR #18, modified to no longer require pyyaml

This keeps email_reply_parser stdlib only, and allows easy addition
 of new locales without needing to parse config files

email_reply_parser/__init__.py

@@ -1,5 +1,5 @@
 import re
-from regexps import regexps
+from locales import Locales
 
 """
     email_reply_parser is a python library port of GitHub's Email Reply Parser.
@@ -42,7 +42,7 @@ def __init__(self, text, locale='en'):
         self.fragment = None
         self.text = text.replace('\r\n', '\n')
         self.found_visible = False
-        self.regexps = regexps(locale)
+        self.regexps = Locales.get_locale(locale)
 
     def read(self):
         """ Creates new fragment for each line

email_reply_parser/locales.py

@@ -0,0 +1,19 @@
+class Locales(object):
+    @classmethod
+    def get_locale(cls, locale='en'):
+        return getattr(cls, locale)
+
+    en = dict(
+        sig='(--|__|-\w)|(^Sent from my (\w+\s*){1,3})',
+        quote_hdr='^:etorw.*nO',
+        multi_quote_hdr='(?!On.*On\s.+?wrote:)(On\s(.+?)wrote:)',
+        quoted='(>+)',
+        header='^(From|Sent|To|Subject): .+',
+    )
+    it = dict(
+        sig='(--|__|-\w)|(^Inviato da (\w+\s*){1,3})',
+        quote_hdr='^:ottircs\sah.*lI',
+        multi_quote_hdr='(?!Il.*Il\s.+?ha\sscritto:)(Il\s(.+?)ha\sscritto:)',
+        quoted='(>+)',
+        header='^(Da|Data|A|Ogg): .+',
+    )

setup.py

@@ -32,7 +32,5 @@
         "Programming Language :: Python :: 3.2",
         "Programming Language :: Python :: 3.3",
         "Programming Language :: Python :: 3.4",
-    ],
-    requires=['pyyaml'],
-    tests_require=['pyyaml']
+    ]
 )