PSR line soft-limit is 120 chars, multi line is transformed to single line
Adds some newlines
Exception messages should be short and simple
Adds integer overflow/underflow handling for arithmetic operations. Partly fixes #7 (mentioned by @camspiers)
Improves Money tests
Throw an exception when result of arithmetic operation is not an integer. Reference #7
Removes floor from allocate, intval does that
Fixes wrong dockblock
Changes visibility
Merge pull request #55 from sagikazarmark/feature/money-refactor

Feature/money refactor