Move ByteString to 'stirling.io' package

Begin disbanding the legacy package name level 'itch'.

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Move ByteBuffers to 'stirling.io' package

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Remove Spec

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Move Source to 'stirling.io' package

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Rename 'stirling.itch.bats' to 'stirling.bats'

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Rename 'stirling.itch.nasdaq' to 'stirling.nasdaq'

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Rename 'stirling.itch.nasdaqomx' to 'stirling.nasdaqomx'

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Merge pull request #101 from jvirtanen/fixes/package-structure

Improve package structure