Explicitly declared segment v0.4.2

LATEST is a bad idea.  A breaking change was introduced in version
1.0.0, causing this library to stop compiling.

Setting to 0.4.2, last known good version.  It can be updated later if
the Clojure code is updated to match.
Fixed variable name error

2d4d721 did not rename all variables correctly.
Events with sequence/map values report correctly

Flatten is too agressive for the desired result; we need apply concat,
which only goes one level deep.
Merge pull request #3 from Agrisight/segment-version

0.1.2 Bug Fixes