syntastic 3.4.0

Core changes

• Removed g:syntastic_delayed_redraws (@lcd047)
• New options *_before and *_after for makeprgBuild() (@lcd047)
• New jump mode for g:syntastic_auto_jump (@lcd047)
• New buffer-local user variables b:syntastic_<filetype>_<checker>_<option> (@lcd047)
• Overhaul of the checker registry (@lcd047)
• Speed optimisations (@lcd047)
• Various bugs have been fixed.

Syntax checker changes

• Disabled the perl checker by default, for [security reasons]0
• Removed support for YouCompleteMe (@lcd047)
• Added vimlint checker for VimL (@lcd047)
• Added bemhtmllint checker for BEMHTML (@SevInf)
• Added frosted checker for Python (@sergeybe)
• Added code-ayatollah checker for Racket (@lcd047)
• Added makeinfo checker for texinfo (@lcd047)
• Added avrgcc checker for AVR sources (@karel-)
• Added gcc checker for AT&T and Intel assembly files (@jrahm)
• Added syntaxerl checker for Erlang (@locojay)
• Added jsxhint checker for JSX (@thomasboyt)
• Various bugs have been fixed.