wabac.js 2.18.4

What's Changed

• encoding fix: when BOM marker is detected by @ikreymer in #179
• build(deps): bump braces from 3.0.2 to 3.0.3 by @dependabot in #177
• send message on 404 page by @ikreymer in #180
• bump to wombat 3.7.7

Full Changelog: v2.18.3...v2.18.4