version bump
Handle single column CSV files
relational UDFs can register a functions for returns, which can be used to dynamically generate the schema
sort results for consistant testing
copyedit README
Merge pull request #3 from cvrebert/patch-1

copyedit README
Converted compiler to use a Zipper for manipulating the query tree.
Adapters can now participate in the query evaluation 
phase optionally choosing to rewrite the query
as they see fit. 

A default implementation is provided with the 
Adapter class that mimics the old behavior.
Fix some circular import problems.

Importing classes where they're defined rather than from the top splicer module that exports them.
Function do not inherit from RelationOp so children() and make_node() need to test for them specifically.
Simplified the FileServer by using the ability
to rewrite the expression tree. 

Note that complex method chaining is now handled by simply replacing the LoadOp with one or more Function() expressions and letting the compiler chain the methods together for us.

The work horse functions (decode and extract_path) have been
moved from this module to relational functions found under splicer.functions.filesystem so that other
adapters can use them.
Renamed "Servers" to "Adapters"
Directory adapter now uses the where clause to filter files before opening and decoding their contents.
select count() from table without a group by clause now works!
 only sample a 1MB of a CSV file
removed cruft
BugFix: Multi argument relational function calls

Ensured that each argument is properly bound when
creating the anonymous function. Previous version
had the last argument evaluated bound to all 
arguments.
BugFix: Don't barf when flattening multi record
columns than have a value of None.

Technically these should be represented as an 
empty list but that maybe to much work for some
adapter authors.
Merge pull request #1 from trivio/master

latest from Scott