One of CNET's most highly rated VPNs adds more features for a busy spring and summer. Alex Valdes from Bellevue, Washington has been pumping content into the Internet river for quite a while, including stints at MSNBC.com, MSN, Bing, MoneyTalksNews, Tipico and more. He admits to being somewhat fascinated by the Cambridge coffee webcam back in the Roaring '90s. More speed, more security, more servers. That's what Proton VPN is promising in its spring and summer roadmap,  unveiled this week . The plan includes an updated WireGuard protocol, a redesigned Linux app with support for the Stealth protocol, over 20,000 servers worldwide and expanded admin controls for businesses. The upgrades are vital if Proton VPN is to help customers cope with increasing government censorship and age verification systems, product lead Antonio Cesarano said in the blog announcement.…