The previous version available from my site was v4.52, so here's a list of changes since then:
7.53 Fixed bug in editing mode logic, present since version 7.51.
Rem'd out development code.
Unassigned variables now initialized.
7.54 Jedec SMD library components accuracy is improved and are generated from raw official data.
Standard drill assignments assumed for old project files and .ncd files ignored (used only between version 6.00 and 6.02).
File format revision reported on load.
Auto Gerber/NC Drill now has its own export menu.
Selecting a printer port in a non printing export mode now prompts a warning.
Improved code that determines whether the export path should mirror the project path.
New track snaking feature creates sinusoidal track offset transitions which can be particularly useful for data busses.