.NetGrid v2.8.3 has been released. Column filters bug fixing

This version contains minor bug fixes and some improvements.

• [BUG] Under certain conditions, the .Net Grid can draw artifacts in editable cells.

• [BUG] Fixed a bug where column filters do not work correctly on the second level of the hierarchy.

• [BUG] Fixed a bug where column filters are able to filter only string values.

• Minor bug fixes