New Release: 2.8.0

The JSHint team May 31st, 2015

add the "fetch" global for "browser" environment (b3b41c8), closes #2355
Allow lexer to communicate completion (a093f78)
Distinguish between directive and mode (51059bd)
Don't throw "Duplicate class method" with computed method names (ab12dfb), closes #2350
Ignore unused arrow-function parameters if unused: vars (2ea9cb0), closes #2345
Move helper methods to state object (678da76)
parse const declarations in ForIn/Of loops (2b673d9), closes #2334 #2335
Parse semicolons in class bodies (58c8e64)
Prevent regression in enforceall (6afcde4)
Relax singleGroups restrictions: arrow fns (4a4f522)
Relax singleGroups restrictions: IIFEs (9f55160)
Reset generator flag for each method definition (2444a04), closes #2388 #2389

Implement module option (290280c)
support destructuring in ForIn/Of loops, lint bad ForIn/Of LHS (c0edd9f), closes #2341