Add variable representing number of allocations
Add . at the end of the comment
Add required fields related to allocations
Update changes made by previous commit
Fix previous commit issues
Add missing closing bracket
Added block structure
Merge with master
Changes according to code review
Review 2
Forward iterator implementation - operators ++ and ()
Merge branch 'prv-kkowalczuk-blockstruct' of https://github.com/kkowalczuk/bignum into prv-agajewski-iterator

Conflicts:
	Block.cpp
	Block.h
Fixed corrupted files after merge
Operator * in BigNumberIterator and support in Block
Implementation of operators: ++ (preincrement), ==, * (dereference)
Created class for unit tests of iterator and derived BigNumber for testing; first unit test for ++ (preincrement) operator
Unit test for operator * (dereference)
Unit tests for end iterator
Unit test for operator == (equality)
Implemented operator != (inequality) and modified unit test to cover added code