0.10.2 : Improve assertions

Maintenance release containing a few renaming breaking changes and improvements regarding the assertions:

Breaking changes

• GenericAssertion renamed to GenericEqualityAssertion
• `show_last_response_bodyrenamed toshow_last_body``
• show_last_response_body_as_json renamed to show_last_response_body_json
• show_last_response_headers renamed to show_last_headers

Assertion redesign

The assertions have been redesigned to offer increase their reusability and expressiveness

There are now 4 types of assertions:

• Equality : GenericEqualityAssertion, CustomMessageEqualityAssertion
• Ordering : GreaterThanAssertion, LessThanAssertion, BetweenAssertion
• Collection: CollectionEmptyAssertion, CollectionNotEmptyAssertion, CollectionSizeAssertion, CollectionContainsAssertion
• String : StringContainsAssertion, RegexAssertion

Any of those assertion can be composed using and and or.
For instance, the BetweenAssertion is built by composition

LessThanAssertion(inspected, high) and GreaterThanAssertion(inspected, low) 

There are also a some of helpers on the Assertion companion objects.

Misc

• support for Scala 2.12
• new built-in extractor <random-alphanum-string>
• add isNotEmpty on JsonArrayStep

Then assert body.asArray.isNotEmpty

• fix a bug in the JSON array comparaison in case of duplicated element
• fix a bug in the header session encoding
• new debug instruction to show the full response

show_last_response
show_last_response_json

• introduce new DSL block RepeatWith to repeat a series of step with different values

RepeatWith("Superman", "Superman", "GreenLantern", "Spiderman")("superhero-name") {

  When I get("/superheroes/<superhero-name>").withParams("sessionId" → "<session-id>")

  Then assert status.is(200)

  Then assert body.path("hasSuperpowers").is(true)
}

• improve error reporting of wrapper steps with the initial nested error.