Change log

Adding functionality for target landing site optimization
Adding cutdown functionality, floating flight duration, and cutdown timeout. Integrating with the web code (layout needs improving)
Standardised installation and dependency management
Standardized the function and class documentation, and added an automatic documentation pages builder using sphinx
Added some basic tests that loads previously downloaded NOAA weather data
Improved weather download rates
Added the targetFlight class, and all optimization methods
Migrated attributes to properties: better for changing single variables on the fly, rather than long preflight checks.
Breaking down large procedures to modular function calls
Fixing bugs caused by Python 3, and various other outdated dependent libraries
Improved Logging of errors

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