push version number, update changelog

Update README.md

Merge pull request #121 from hvasbath/extend_solution_export

dev branch pre-release

Merge pull request #117 from hvasbath/nonT_2d

covariance, models.geodetic introduce 2d spatial noise estimation

prerelease: version bump, update docs, readme

update version, CHANGELOG and readme for new release

Merge pull request #110 from hvasbath/ffi_cdf

v1.2.1 stage_posteriors improvements, multievent support

Merge pull request #104 from hvasbath/ampspecs2

dev 1.2. rc1

Merge branch 'master' of github.com:hvasbath/beat

changelog: add release date