Merge branch 'colored_linters' into 'beta'

Colored linters

See merge request !255

tox.ini

@@ -51,4 +51,4 @@ max-complexity = 15
 max-line-length = 160
 import-order-style = google
 application-import-names = flake8
-format = ${cyan}%(path)s${reset}:${yellow_bold}%(row)d${reset}:${green_bold}%(col)d${reset}: ${red_bold}%(code)s${reset} %(text)s
+format = %(cyan)s%(path)s%(reset)s:%(yellow)s%(bold)s%(row)d%(reset)s:%(green)s%(bold)s%(col)d%(reset)s: %(red)s%(bold)s%(code)s%(reset)s %(text)s