speed and correctness improvements.

this release also adds preliminary support for --groups. See slivar expr --help and the README for more info.

gnotate sub-command

add a new gnotate sub-command to annotate with gnomad allele frequency and flag using: [REMOVED use updated gnotate files]

gnomad annotation

this release includes the first version of gnomad annotation. Just include --gnomad gnomad-2.1.zip

The zip file is available at: https://s3.amazonaws.com/gemini-annotations/gnomad-2.1.zip for GRCh37. Version 38 will be available in a later release.

initial release

working expressions and filtering. binary is available for linux. requires libhts.so in LD_LIBRARY_PATH or discoverable location.