no implicit int casting!

Merge pull request #123 from markovmodel/trajgen

[generation] replaced scipy.stats.rv_discrete by np.random.choice

Merge pull request #117 from marscher/ceff_no_multiprocess

do not require multiprocess, but use stdlib in efficient_count_matrix parallelization

Merge pull request #112 from marscher/parallelize_effective_count_matrix

Parallelize effective count matrix

[doc] amend changelog

[ci skip]

Merge pull request #100 from markovmodel/prepare_rel_121

[doc] amending changelog for 1.2.1

[doc] added changelog entry

[ci skip]

[doc] added release note

[ci skip]

Merge pull request #89 from marscher/maint

[estimation] removed pure python impl of rev and fixed pi transition matrix estimation.

Moved old impl to test unit as a reference, since the algorithm is only used there.

Merge pull request #74 from fabian-paul/fix_nonconverged_transition_m…

…atrix

Fix nonconverged transition matrix