tss.vim: fix completion/update interactions
tss.vim: fix completion/update interactions

- force updates during completion, while still in insert mode
- use 'update nocheck' at completion start, for speed (#14)
- fall back to full 'update' when completion fails (#13)

noteon/typescript-tools,noteon/typescript-tools,clausreinke/typescript-tools,robertpenner/typescript-tools,i-e-b/typescript-tools,noteon/typescript-tools,robertpenner/typescript-tools,i-e-b/typescript-tools,clausreinke/typescript-tools,robertpenner/typescript-tools