OP-5810 - documentation updates to include new returned values and new parameters for purchases.
OP-5957 - Remove V3/regions documentation.

Galaxy doesn't support /v3/regions, so we shouldn't document it as existing.
OP-5810 - Review comment fixes.
OP-5810 - Review comment changes and restructure deal_items explanation.
OP-5810 - Review comment changes.
Merge pull request #56 from demandchain/EL-OP-5810-develop_deal_options-API-updates

OP-5810 - documentation updates to include new returned values and new p...

I will publish this today per previous recommendation by @hunpin