v2.0.0-beta.6

Changelog

178b9fc extract concatenated strings (#143)
0ebaecb Better extract/merge workflow documentation (#140)
ad28c68 Add LocalizeWithTag (#139)
c52be5d update to CLDR 34
fc57a7d Export MessageNotFoundErr (#124)
f406bb2 error if message ids mismatch (#132)
04f547c Fixed localizer example (#122)
e786c88 add func to list Language tags from bundle (#120)