store abspath -- needed for Postgres copy and good to have
first commit of CSV into SQL with Postgres and a test
- now using csv.dialect
- created new and more complicated test set
- updating tests with setup/teardown funcs and better globals
- updating tests to NOT use Table/Computer
adding more options for \COPY as kwargs and added try/except block to gracefully handle fail over to sql.extend()
 - created dialect mapping for multiple keyword arguments of different names/spellings but similar concepts
 - started sqlite integration and testing
Special case RealMath in expressions
Add tests for user defined functions and math functions
Test more math functions
sql: map fixlen strings to sqlalchemy.String
sql: properly translate string encoding and length

between datashape and sqlalchemy
expr: Summary
expr: summary hashable and eval(str(.)) able
python: Summary compute
scalar: name, dtype properties
expr: Reductions support Number interface
compute: python arithmetic
python: summary by
pandas: summary by tests
pandas: summary by
pandas: summary