make test fails because it can't find `pip2`
Trying it with normal pip
Deleted KhmerError and all references to it.
Builds succesfully, `make test` runs without error.
backed out changes to Makefile (references to pip2)
Merge pull request #542 from leonorgg/fix/444

Fix/444
Adding a description to the Changelog
Merge branch 'drlabratory-fix/503'
Trying to fix issue 524
refactoring code resolves #495
Fixed issue #502
refactoring code resolves #495
removing comments resolves #495
fixed descr --> description
adding accidentally removed prints back in
code review comments
updated ChangeLog
Merge pull request #551 from jstapleton/fix/524

Fix/524
Fixed issue #502
autopep8 formatting
Merge branch 'fix/502' of github.com:RodPic/khmer into RodPic-fix/502
Merge branch 'RodPic-fix/502'