introduced package 'src', moved 'vyi' into 'src'
in preparation for a test suite
updated gitignore
basic 'testing' setup
update .gitignore: 'out'
minor improvement: services
split up sql mappings in preparation for the test
framework. this allows to setup only the mappings
which are really required for the tests.
basic 'transaction' testing
added sphinx
updated crate to 0.36.6