Asteca

Changed
- Likelihood method now supports [Dolphin (2002)](http://adsabs.harvard.edu/abs/2002MNRAS.332...91D) _Poisson likelihood ratio_ function.
- Closed 120, 101, 129, 124, 102.
- Minor [position fix](https://github.com/asteca/asteca/commit/00538bda879009bae0a4e7565b124c8939c75d0f) for synthetic cluster text box in output plot.
- Brute force algorithm now returns [correct errors](https://github.com/asteca/asteca/commit/afe30cbdff561a90986a638c55a4b7247fd0bc53).
- Some fixes for when unique values in the input parameter ranges are used [[1]](https://github.com/asteca/asteca/commit/7cc383d799f2af5c1f1f8a6dcfc80e639461f02d) [[2]](https://github.com/asteca/asteca/commit/c6505025d4c3b6147a2913fad648dc18c125376b).
- Replaced deprecated [compiler package](https://github.com/asteca/asteca/commit/f9e8c5edba5f5ca8cc33ec1afb4d137f7167e8df) used to flatten list.

Caveats
- Still not sure why _tolstoy_ likelihood is biased towards high masses :confused:

_More stable release._

Changed
- Closed 113, 116.
- Minor [change](https://github.com/asteca/asteca/commit/3cffb4faa0c1dc6956aae2217c73afb4f392e53d) to error function.
- Closed _Known issues_ from previous version.

Caveats
- Same as previous version.

_First ~~semi-stable~~ buggy release_

Changed
- Closed 72, 99, 37.
- Changed the way the IMF was [sampled](https://github.com/Gabriel-p/asteca/commit/0671e74c52fbecde6bcbb1afb1c2624875156e57), now it should be faster and more precise.
- Some speed improvements (moved things around mainly).
- Binary fraction is now a free parameter.

Known issues
- **Serious bug**: if the DA is set to run but the _Best fit method_ isn't, the final plot can't be produced since the `syn_cl_err` function isn't used ([fixed](https://github.com/Gabriel-p/asteca/commit/3e806bd0af5d7fcd7c8f2940716df880f4c1b67d) in next release).
- Forgotten `print` prints out mass values every time the E/I operator is applied ([fixed](https://github.com/Gabriel-p/asteca/commit/8b313ef60fddccc41fd6fb7b9746f75f3e867d39) in next release).
- If the number of points (`n_left`) in the radius finding function is smaller than 4, a very small radius is likely
to be selected. [Fixed](https://github.com/Gabriel-p/asteca/commit/c247fd7fa4cca4d6bb341263434a4a43a4778efd) in next release.

Caveats
- The total initial mass can be set as a free parameter but the likelihood function will select always synthetic clusters of high mass. Thus it is advised to leave this parameter fixed to 1000 solar masses.
- The binary fraction found is not stored in the output data file.
- Some density map plots for mass and binary fraction are missing.