Commit Briefs
re-create the tls_config for each request
this is just to simplify the future additions of client certificates.
move know_host parsing to the fs process and load the store via imsgs
Like previously did with the session file, now the main process doesn't parse anything with the only exception being the configuration file. With this in, the only bit from fs.h still used in the main process is the path to the configuration file.
implement persistent tab history
The session file is now overloaded with the history info, that means that upon startup telescope can repopulate each tab history! The price to pay is that one can't start an old telescope with a new session file, otherwise will get a lot of fancy '<' and '>' tabs...