chore(main): release webssh2 0.4.7-pre-5

:robot: I have created a release beep boop

add additional params for POST requests #290 (46c1560)
add additional vars to POST requests #290 (0a4e419)
add fontFamily, letterSpacing, lineHeight (97f3088)
add fontSize option #292 (5e78812)
add SIGTERM to safe shutdown feature (675b4f5)
auth: ssh private key auth implemented via config.json (#161) (342df8e)
config system changes #284 (#285) (9c99b09)
config: specify local source address and port for client connections fixes #152 (#158) (65d6ec6)
consistent logging messages see #286 (50cfcb9)
CORS support (b324f33)
credentials over http post for #290 (5b8f88c)
reorder viewport setup at ssh handshake #292 (140e1e2)
test change for release (476b566)
validate referer to /reauth is valid (0dcaa6e)

cols and rows were not properly assigned for terminal (#337) (3246df7)
deprecated term.setOption (d903da8)
Fix the parameter passing problem of setDefaultCredentials to make it perform data initialization normally (#288) (40cbb35)
fixes default for allowreauth (#239) (dcfd81b), closes #238
invalid css in style.css (ffab534)
obey host ssh.host in config fixes #190 (7b7e8e7)
subnet unauthorized now emits "ssherror" which persists across websocket termination (e796f9f)
update config.json.sample (#177) (42f973b)
update read-config-ng to 3.0.5, fixes #277 (3e82c0d)
update xterm.js fixes #261 (c801ef9)