scp over local context is slow. Investigate

[retrogradeorbit]

./spire -e '(upload {:dest "test-spire" :src "spire"})'
local spire|============================================================================| 100% 796.57 kB/s eta:0s      
{:attr-result {:result :ok}, :copy-result {:result :changed}, :result :changed}

< 800kb/sec

[retrogradeorbit]

now 170MB/sec

[retrogradeorbit]

fixed in 0.1.0-alpha.13