proportion expressed across transcripts (pext)

Original file that was previously found here: <pre><code class="language-http">https://storage.googleapis.com/gnomad-public/papers/2019-tx-annotation/pre_computed/all.possible.snvs.tx_annotated.022719.tsv.bgz</code></pre> Now only a newer file is available: <pre><code class="language-http">https://storage.googleapis.com/gnomad-public/papers/2019-tx-annotation/pre_computed/all.possible.snvs.tx_annotated.GTEx.v7.021520.tsv.bgz</code></pre> which is differs from the original.