Selected Warning messages disabled in pylintrc:
* unused-argument: Quite a large and disruptive change if enabled.
* broad-except: Most required in-depth investigation to determine type.
* fixme: Not important
* protected-access: Complicated to fix
* import-error: Too many false-positives
* unidiomatic-typecheck: Should be fixed in the next round of checks.
* unused-variable: Again large and disruptive changes.
* global-statement: Most usage is required.
* attribute-defined-outside-init: Should be fixed in next round of checks.
* arguments-differ: Possible false-positives, needs revisited.
* no-init, non-parent-init-called, super-init-not-called: False-positives?
* signature-differs: False-positives?