added basic python template
using prepare_select to initiate query
fixed all but unused variable warnings
record methods divided to private/public
removed default path from Db constructor
added python test template
added field name checking
added table extensibility support
removed table extension
installing only external headers
fix: linked libswdb to python module
using Swdb class in python-swdb
removed ucell, using rvalue instead
removed uvector, using rvalue instead
removed ustring, using rvalue instead
removed uFieldFilter, using rvalue instead
renamed Swdb::query to Swdb::uquery
renamed Swdb::record to Swdb::urecord
added Python Record bindings
Query clean-up