static analysis tests for the 1 + '1' test
renamed company-jedi to anaconda-mode, cc @proofit404
1 + '1' TypeErrors are now detected, but not shown in the right place
it should be possible to find the origin of an operation, if it's a faulty one (static analysis)
Operator fixes. Subclass of Simple, now.
fix the operation test where static analysis reports additions of ints with non-ints.
check not only - but also + for numbers.
Don't warn on addition of an int literal plus an unknown int number.