reduce fingerprints len by 32.5% to reduce descriptors size
I have read proposals to reduce descriptor size and found fingerprints use SHA1, why not use base64 for them to change for example: moria relay:
SHA1:
string(40) "9695DFC35FFEB861329B9F1AB04C46397020CE31"
base64 without trailing padding:
string(27) "lpXfw1/+uGEym58asExGOXAgzjE"
pseudocode for example:
substr(base64_encode(hex2bin('9695DFC35FFEB861329B9F1AB04C46397020CE31')),0,27)
results into 32.5% less fingerprints stringlen.