added openpyxl support

coord.py

@@ -1,9 +1,5 @@
 
 
-
-import xlrd
-
-
 class Coord:
     def __init__(self, row, col):
         self.row = row
@@ -17,8 +13,8 @@ class Coord:
         return Coord(self.row if row is None else row,
                      self.col if col is None else col)
     
-    def cell(self, sh) -> "xlrd.sheet.Cell":
-        return sh.cell(self.row, self.col)
+    def cell(self, reader: "ExcelSheetReader") -> "TranschendentnostCell":
+        return reader.cell(self.row, self.col)
 
     def __repr__(self):
         import utils
@@ -49,8 +45,9 @@ class Merged:
     def width(self):
         return self.high.col - self.low.col + 1
     
-    def cell(self, sh) -> "xlrd.sheet.Cell":
-        return sh.cell(self.low.row, self.low.col)
+    def cell(self, reader: "ExcelSheetReader") -> "TranschendentnostCell":
+        return reader.cell(self.low.row, self.low.col)
+
     
     def is_pseudo_merged(self):
         """Псевдо-мержнутая значит размеом 1x1, оно же если начало совпадает с концом"""