Added qintitle support (#58)

* Added support for qintitle parameter.

* Minor fix to comment.

Author: MichaelBalazs

newsapi/newsapi_client.py

@@ -30,7 +30,7 @@ def __init__(self, api_key, session=None):
             self.request_method = session
 
     def get_top_headlines(  # noqa: C901
-        self, q=None, sources=None, language="en", country=None, category=None, page_size=None, page=None
+        self, q=None, qintitle=None, sources=None, language="en", country=None, category=None, page_size=None, page=None
     ):
         """Call the `/top-headlines` endpoint.
 
@@ -44,6 +44,10 @@ def get_top_headlines(  # noqa: C901
             `documentation <https://newsapi.org/docs/endpoints/everything>`_ for search syntax and examples.
         :type q: str or None
 
+        :param qintitle: Keywords or a phrase to search for in the article title and body.  See the official News API
+            `documentation <https://newsapi.org/docs/endpoints/everything>`_ for search syntax and examples.
+        :type q: str or None
+
         :param sources: A comma-seperated string of identifiers for the news sources or blogs you want headlines from.
             Use :meth:`NewsApiClient.get_sources` to locate these programmatically, or look at the
             `sources index <https://newsapi.org/sources>`_.  **Note**: you can't mix this param with the
@@ -89,6 +93,13 @@ def get_top_headlines(  # noqa: C901
             else:
                 raise TypeError("keyword/phrase q param should be of type str")
 
+        # Keyword/Phrase in Title
+        if qintitle is not None:
+            if is_valid_string(qintitle):
+                payload["qintitle"] = qintitle
+            else:
+                raise TypeError("keyword/phrase qintitle param should be of type str")
+
         # Sources
         if (sources is not None) and ((country is not None) or (category is not None)):
             raise ValueError("cannot mix country/category param with sources param.")
@@ -162,6 +173,7 @@ def get_top_headlines(  # noqa: C901
     def get_everything(  # noqa: C901
         self,
         q=None,
+        qintitle=None,
         sources=None,
         domains=None,
         exclude_domains=None,
@@ -180,6 +192,10 @@ def get_everything(  # noqa: C901
             `documentation <https://newsapi.org/docs/endpoints/everything>`_ for search syntax and examples.
         :type q: str or None
 
+        :param qintitle: Keywords or a phrase to search for in the article title and body.  See the official News API
+            `documentation <https://newsapi.org/docs/endpoints/everything>`_ for search syntax and examples.
+        :type q: str or None
+
         :param sources: A comma-seperated string of identifiers for the news sources or blogs you want headlines from.
             Use :meth:`NewsApiClient.get_sources` to locate these programmatically, or look at the
             `sources index <https://newsapi.org/sources>`_.
@@ -227,6 +243,13 @@ def get_everything(  # noqa: C901
             else:
                 raise TypeError("keyword/phrase q param should be of type str")
 
+        # Keyword/Phrase in Title
+        if qintitle is not None:
+            if is_valid_string(qintitle):
+                payload["qintitle"] = qintitle
+            else:
+                raise TypeError("keyword/phrase qintitle param should be of type str")
+
         # Sources
         if sources is not None:
             if is_valid_string(sources):