update documentation for ShiftRegister
document optional enable for shift register in manual
make sure poke and expect assign aggregates in proper order
Merge pull request #225 from zhemao/fix-aggregate-poke

Make sure poke and expect assign aggregates in proper order
Fix UIntToOH for expicitly-specified non-pow2 widths
Add min/max operators to Num

The dynamic cast is correct but unfortunate--anyone know how to avoid it?
Fix bit insertion for insufficiently-wide indices
Merge branch 'master' of github.com:ucb-bar/chisel
Fix scala compiler warning
Update canonical test outputs

Commit 686ecc790e8e6f5e290ffeffea2e5b6aae173663 failed to do so.
Fixed variable-length hashes for jackhammer dump files
Support seeding random number generator with arg to init()

Passing 0/false disables randomization, as before.
Passing a nonzero value seeds the LFSR.
Use CXX to specify the "g++" version in the environment.
Merge pull request #224 from zhemao/shiftreg-doc

Update documentation for ShiftRegister
Merge branch 'master' of https://github.com/ucb-bar/chisel into counter
fix dfs for the right naming