PR for v.1.9.2

CHANGES.rst

@@ -1,4 +1,14 @@
 
+Release 1.9.2
+=========================================
+
+* **BUGFIX:** Resolved over-broad False-y validation of ``PieDataLabel.distance`` to allow for ``0`` 
+  values. Closes #192.
+* **BUGFIX:** Fixed over-broad False-y validation of ``Tooltip.header_format`` to allow for empty string
+  values, bringing it in line with ``Tooltip.footer_format``. Closes #193.
+
+----
+
 Release 1.9.1
 =========================================
 

highcharts_core/__version__.py

@@ -1 +1 @@
-__version__ = '1.9.1'
+__version__ = '1.9.2'

highcharts_core/options/tooltips.py

@@ -438,7 +438,10 @@ def header_format(self) -> Optional[str]:
 
     @header_format.setter
     def header_format(self, value):
-        self._header_format = validators.string(value, allow_empty = True)
+        if value == '':
+            self._header_format = value
+        else:
+            self._header_format = validators.string(value, allow_empty = True)
 
     @property
     def header_shape(self) -> Optional[str]:

highcharts_core/utility_classes/data_labels.py

@@ -946,7 +946,7 @@ def distance(self) -> Optional[int | float | Decimal | str]:
 
     @distance.setter
     def distance(self, value):
-        if not value:
+        if value is None:
             self._distance = None
         else:
             try:
@@ -955,6 +955,8 @@ def distance(self, value):
                 if not isinstance(value, str):
                     raise errors.HighchartsValueError(f'distance must be a number or a string, but received '
                                                       f'{type(value).__name__}.')
+                if value == '':
+                    value = None
 
             self._distance = value