unicode fix
removed WriteBatch.create_in_index
fixed #182
cypher transactions
added Record class
fixed #188
Merge branch 'hackathon' into release/1.6.1
basic functionality in place for #146; needs tests; needs authentication (see #195); needs comments and docs
updates docs for #193
latest httpstream (not versioned)
applies authentication through user_info part of URI; fixes #195
added basic shell repl
shell captures non-Cypher commands
basic shell in place (#192)
changed order of iteration for BatchRequestList.find; hopefully fixes #189
use Record class for all Cypher results; fixes #186
shell execute and parameters
neater command line handling in shell, also neater parameters
add/clear/show as separate verbs
added support for Record slicing (#186)