0.5-rc2

Breaking changes:

• removed monands (funcool.cats library), related code and docs removed xiana.interceptor.wrap/interceptor
• changed interceptors behaviour making them similar to pedestal and sieppari
• changed error handling
• addded deps.edn
• a bunch of other small fixes.

0.5-rc1

Breaking change: rename almost all namespaces from framework.. to xiana..).