Add shouldContainSome and shouldContainNone to collections

[MarkusAmshove]

Issue: #59

Added the following methods:

shouldContainSome
shouldContainNone

for all yet supported types of collections.

Note: The shouldContainSome is almost the same as shouldNotContainAny, but is added to have the same semantic as shouldContainSome.

CharSequence will also have shouldContainSome and shouldContainNone

Failure messages

Collection shouldContainSome

Collection shouldContainNone

CharSequence shouldContainSome

CharSequence shouldContainNone

[MarkusAmshove]

@goreRatzete Can you review this? :)

[AndreasVolkmann]

Hmm did you mean shouldContainNone is almost the same as shouldNotContainAny ?

I think it looks good, nice work!

[MarkusAmshove]

Yes it behaves the same. I thought that using shouldContainSome could be used together with shouldContainNone within a single unittest.
It would shorten the mind process of what is being tested that way, but I'm not sure if having both (none and not any) is a good idea