PFM for NTW v1.5.7

Features:

    * Edits most database files.
    * Previews .tga, .dds, .txt, .lua, .h, .fx, .fx_fragment, and .battle_script files.
    * Edits .unit_variant and .atlas files, allowing modders to easily customize models and units.
    * Right-click copy and pasting is now enabled.
    * [1.5.4] Extracted .atlas files can be used to generate grid overlays for .dds textures. Overlays are saved as PNG files with transparency so they 	      can be easily imported into an image editor as a new layer.
    * [1.5.5] The currently selected packed file now shows in the bottom status strip.
    * [1.5.5] Columns autoexpand to match string length in the .atlas and .unit_variant editors.
    * [1.5.6] Users may now export atlas and unit variant entries to TSV.
    * [1.5.7] Previews XML documents.


Fixes:

    * Bug that prevented some tables from being read has been fixed.
    * Miscalculation on .atlas file editor has been fixed.
    * Memory overflow exception when editing the .atlas file has been fixed. (I hope)
    * [1.5.3] Fixed save problem in .atlas and .unit_variant files.
    * [1.5.3.1] Fixed save problem in .unit_variant reference.
    * [1.5.4] .atlas file editor control now requires double click to edit cells. This makes it consistent with the .unit_variant editor.
    * [1.5.4] Warning added when "CA packs are read only" is unchecked.
    * [1.5.5] Columns autoexpansion in .atlas and .unit_variant editors seems to have solved the Out of Memory exception some users experienced with               those controls.
    * [1.5.5.1] Fixed mesh/texture reference save problem in .unit_variant files.
    * [1.5.6] More work on the memory leak.
    * [1.5.6] Users may only rename one node before saving.
    * [1.5.6] Fixed error that prevented some tables from being read.
    * [1.5.7] Fixed error that prevented first row headers from refreshng properly.