The Gerber attribute deletion command (%TD,xxx) always cleared all attributes,
instead of clearing xxx attribute.
Therefore some attributes were not always displayed.
From master branch, commit 7206b567
The standard DIM() macro was not typesafe as it happily deferred errors
to runtime that can be caught at compile time. Replacing it with a
generic C++11 constexpr allows for typecasting, comparison and compile
time error checking.
Previously, the M and G00, G01, G02 and G03 commands were read, but nothing was actually done.
The current support is a bit rough, but it allows reading some drill files with routing commands.
jean-pierre charras
Seth Hillbrand
Jeff Young