first crack at AccessSpec support
AccessSpec-related messages
hackishly AddAccessSpec
scripts to test tag access
implement C1G2Write
add --tx-power and --word-count args to access.py
OpSpec parameter changes after testing w/ Speedway reader
ignore unparseable TagReports
wrap decoder
fix TagReportData encoding

(and newly support OpSpecResult params in same, for READ/WRITE/KILL/etc.)
Merge pull request #17 from sheeley/master

Gracefully fall back to actuall antennas supported by reader.
fix line length from 4080f79
Merge branch 'master' into accessspec
use systemwide plink, not local plink

addresses my concern in #5 (don't really want to be in the business of
distributing Windows executables)
Merge branch 'master' into accessspec
ModeIndex for FM0 is 0 (at least for speedway R1000)
Add tornado websocket example
Merge branch 'master' into accessspec
in 'access' script, read & write command-line args

-r N: number of 16-bit words to read
-w N: number of 16-bit words to write
parse UFHRFModeTable from capabilities

instead of assuming statically that FM0=0, M4=2, and so on