Fix typos (#215)

Fixed typos found in source code comments, etc.

Author: kojix2

ext/pycall/pycall.c

@@ -1190,10 +1190,10 @@ pycall_convert_index(VALUE index)
     }
   }
   else if (rb_obj_is_kind_of(index, rb_cRange)) {
-    pyobj = pycall_pyslice_from_ruby(index); /* New refrence */
+    pyobj = pycall_pyslice_from_ruby(index); /* New reference */
   }
   else if (pycall_obj_is_step_range(index)) {
-    pyobj = pycall_pyslice_from_ruby(index); /* New refrence */
+    pyobj = pycall_pyslice_from_ruby(index); /* New reference */
   }
   else {
     pyobj = pycall_pyobject_from_ruby(index); /* New reference */
@@ -1527,7 +1527,7 @@ pycall_pyobject_to_ruby(PyObject *pyobj)
   Py_API(Py_IncRef)((PyObject *)pyobj->ob_type);
   cls = pycall_python_type_mapping_get_mapped_class(pycall_pytypeptr_new((PyObject *)pyobj->ob_type));
   if (NIL_P(cls)) {
-    rb_warning("Currentry do not support to convert %s to Ruby object", Py_TYPE(pyobj)->tp_name);
+    rb_warning("Currently do not support to convert %s to Ruby object", Py_TYPE(pyobj)->tp_name);
     return pycall_pyobject_wrapper_object_new(rb_cObject, pyobj);
   }
 
@@ -1662,7 +1662,7 @@ pycall_pylong_to_ruby(PyObject *pyobj)
   }
 #endif
 
-  rb_warning("Currentry do not support to convert multi-precision PyLong number to Ruby object");
+  rb_warning("Currently do not support to convert multi-precision PyLong number to Ruby object");
 
   return Qnil;
 }

lib/pycall.rb

@@ -116,7 +116,7 @@ def with(ctx)
     rescue PyError => err
       raise err unless ctx.__exit__(err.type, err.value, err.traceback)
     rescue Exception => err
-      # TODO: support telling what exception has been catched
+      # TODO: support telling what exception has been caught
       raise err unless ctx.__exit__(err.class, err, err.backtrace_locations)
     else
       ctx.__exit__(nil, nil, nil)

lib/pycall/libpython/pytypeobject_struct.rb

@@ -231,7 +231,7 @@ def self.new(*args)
         else
           name, basic_size = *args
           new.tap do |t|
-            # NOTE: Disable autorelease for avoiding SEGV occurrance in Python's GC collect function
+            # NOTE: Disable autorelease for avoiding SEGV occurrence in Python's GC collect function
             #       at which the __new__ method object of this type object is freed.
             t.pointer.autorelease = false