zsh: svn support sunset

[laur89]

First off, thanks for your zsh dots, been using these for my own onboarding.

I see you're installing some prezto stuff via zinit, but as github has sunset subversion support, following statements no longer work:

zinit ice svn; zinit snippet PZT::modules/helper
zinit ice svn; zinit snippet PZT::modules/environment
zinit ice svn; zinit snippet PZT::modules/terminal
zinit ice svn; zinit snippet PZT::modules/editor
zinit ice svn silent; zinit snippet PZT::modules/gpg

Setting up snippet: PZT::modules/helper
==> Downloading PZT::modules/helper (with Subversion)
svn: E170013: Unable to connect to a repository at URL 'https://github.com/sorin-ionescu/prezto/trunk/modules/helper'
svn: E160013: '/sorin-ionescu/prezto/trunk/modules/helper' path not found

Couldn't the modules be defined simply as

zinit snippet PZTM::helper

Also, why's the utility module import using silent pick"init.zsh" lucid ice? init.zsh would be included anyway.

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See also zdharma-continuum/zinit#705