Rename cryo:new to cryo:init

[vEpiphyte]

No description provided.

[codecov]

Codecov Report

Merging #655 into master will decrease coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #655      +/-   ##
==========================================
- Coverage   92.63%   92.59%   -0.04%     
==========================================
  Files         142      142              
  Lines       16878    16878              
==========================================
- Hits        15635    15629       -6     
- Misses       1243     1249       +6

Impacted Files	Coverage Δ
synapse/cryotank.py	98.25% <100%> (ø)	⬆️
synapse/lib/threads.py	74.18% <0%> (-0.82%)	⬇️
synapse/lib/socket.py	82.01% <0%> (-0.64%)	⬇️
synapse/lib/net.py	81.92% <0%> (-0.49%)	⬇️
synapse/links/ssl.py	82.26% <0%> (ø)	⬆️

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