Readjust file structure.

Files were starting to become too large and unmodular.
bind method for Char and make destructors consts.
Test transactions.
Bind using named parameters.
Use extended result codes.
Convenience func for repeated execution of a stmt.
Type check in sekelia.jl
Add bind method for Symbol.
Write the README.
Merge branch 'master' of git://github.com/Sean1708/sekelia.jl

Made some via github wich I forgot to pull.