v4.1.0

• [new-rule] prefer-const (#1801)
• [new-rule] strict-boolean-expressions (#1820)
• [new-rule] no-magic-numbers (#1799)
• [new-rule] import-blacklist (#1841)
• [new-rule] promise-functions-async (#1779)
• [new-rule] no-inferred-empty-object-type: a type must be specified when using a generic class/function/etc (#1821)
• [new-rule-option] allow-named-functions added to only-arrow-functions (#1857)
• [new-fixer] prefer-const (#1801)
• [new-fixer] quotemark (#1790)
• [new-formatter] code-frame formatter shows you the error in context (#1819)
• [enhancement] no-internal-module failures highlight less text (#1781)
• [enhancement] Avoid auto-fixing errors that would result in compilation errors for rules that use type-check (#1608)
• [rule-change] only-arrow-functions will allow functions with a this parameter (#1597)
• [bugfix] no-use-before-declare false positive on named import (#1620)
• [bugfix] prefer-for-of was showing false positive when the element is assigned (#1813)
• [bugfix] The command line argument type-check was swallowing the next argument (#1783)
• [bugfix] tslint:disable-line was re-enabling tslint:disable (#1634)
• [bugfix] adjacent-overload-signatures did not work for constructors (#1800)
• [bugfix] checkstyle formatter was reporting errors under one file (#1811)
• [bugfix] trailing-comma was applied to parameter lists (#1775)
• [api] CLI logic moved into API friendly class (#1688)

Thanks to our contributors!

• Alex Eagle
• Andrii Dieiev
• Andy Hanson
• Art Chaidarun
• Donald Pipowitch
• Feisal Ahmad
• Josh Goldberg
• Klaus Meinhardt
• Maciej Sypień
• Mohsen Azimi
• Ryan Lester
• Simon Schick
• Subhash Sharma
• Timothy Slatcher
• Yaroslav Admin
• Yuichi Nukiyama
• tdsmithATabc
• @wmrowan