Revision history for Linux-SocketFilter
0.04    CHANGES:
         * Provide convenience 'LD AD[name]' pseudoinstruction for auxiliary
           data
         * Document the filter virtual machine
         * Added example code in synopsis sections and in its own file
        BUGFIXES:
         * Compatibility fix for <linux/types.h>
0.03    CHANGES:
         * New instructions: LDMSHX, TAX, TXA
         
        BUGFIXES:
         * Corrected accidentally-swapped LD X vs LDX A
0.02    CHANGES:
         * Added Linux::SocketFilter::Assembler
         * Added proper tests
         * Support :bpf export tag
         
        BUGFIXES:
         * Ensure that detach_filter() actually works
0.01    First version, released on an unsuspecting world.