CFSession V1.4.0

• 1.4.0 update by @Kinuseka in #21

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This was rather a short update but might be impactful one. This aims to reduce detection by cloaking the user agent on headless driver.

This resolves issue:
> #20

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What's Changed

• Added user_agent argument on Options()
• minor refactoring
• Cloaks user agent on headless mode to reduce detection

Full Changelog: 1.3.1...1.4.0

Logs::

V1.4.0 - Headless mode userAgent fix, minor refactoring
V1.3.1 - Improve exception handling, bug fixes
V1.3.0 - Added features, deprecation, behaviour changes, bug fixes
V1.2.1 - Fixed user agent causing detection
V1.2.0 - Bypass improvement, optimization and bug fixes
V1.1.0 - Bypass optimization and user-agent spoof
V1.0.0 - Added strategies to bypass cf, headless mode
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V0.2.3 - incorrect exception raise,  minor refactoring
V0.2.2 - Bug fix, exception inheritence issue, runtime error resolved
V0.2.1 - Workflow update, xvfb error fixed, unicode on none unicode environment
V0.2.0 - Changed API behavior, easier access to backend (named: cfSimulacrum)
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