Add cached model h5 file + history json

data/nn_regression/history.json

+{"val_loss": [6.075815385937646, 5.4834373248332176, 5.835910019929589, 5.200838824281648, 5.408809212879411, 5.0257993341726035, 6.4588499205509455, 4.918822904632762, 5.186673161981645, 4.881746102012809, 4.854983069086177, 5.455567076381426, 4.871822442568466, 5.508717431859364, 4.840506644731061, 4.987694598541131, 5.074656528876157, 4.759140094692056, 4.791172516895924, 4.877749407718624, 4.822264693100363, 5.235536601031589, 4.64870975970973, 4.89746763395637, 4.723700927285183, 4.775827064059612, 4.810277527552808, 4.81030434930608, 4.648951750555038, 4.64893677447633], "loss": [11.977164595986608, 6.350336315891245, 5.996713850700587, 5.778639735014429, 5.608279909168518, 5.483207350253063, 5.389673726061215, 5.294949948860645, 5.17729069893248, 5.112786603236578, 5.011366258507645, 4.974146954381052, 4.912030797942307, 4.865104984744457, 4.824605762422089, 4.787824622137139, 4.769246319627923, 4.737805389295396, 4.709280253460876, 4.654118428383749, 4.646993811500107, 4.655257012178216, 4.601584029752154, 4.577982455129388, 4.580611684236699, 4.549123685297642, 4.547257726603943, 4.52150345753281, 4.5194694838982885, 4.481014627017833]}
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