minor #101 Add PHP 7.4 to Travis (StudioMaX)
minor #101 Add PHP 7.4 to Travis (StudioMaX)

This PR was merged into the 2.1-dev branch.

Discussion
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| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #... <!-- #-prefixed issue number(s), if any -->
| License       | MIT

- Add PHP 7.4 to Travis
- Remove `sudo: false` because this setting was deprecated (https://blog.travis-ci.com/2018-11-19-required-linux-infrastructure-migration)


Commits
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0b8e72e2bdbaaae5f086ec732b639f0822d48535 Add PHP 7.4 to Travis

rollerworks/PasswordStrengthBundle