Lingtypology

- font in a legend changed to the same as the label font
- change rgeos, MASS and sp packages to suggetions
- add "uralex.feature()" function API for Uralic Lexicon Database

- add the possibility to use "fake" language in the "map.feature()" function.
- lingtypology take into account leaflet 2.0.0 updates
- add possibility to use combination of shape and label arguments
- the base layer of the mini-map is the same as the base layer of the main map
- add the "label.font" argument to the "map.feature()" function
- update a "circassian" database
- add the "valpal.feature()" function API for Valency Patterns Database
- add the "oto_mangueanIC.feature()" function API for Oto-Manguean Inflectional Class Database
- add new method for density counterplot. "density.method" argument with two options: "kernal density estimation" or "fixed distance".
- arguments "density.longitude.width", "density.latitude.width", "isogloss.longitude.width", "isogloss.latitude.width" are deprecated. There are "density.width" and "isogloss.width" instead.
- add "facet" argument

- add the "pipe.data" argument to the "map.feature()" function (Thanks nikopartanen for the idea).
- repair the "afbo.feature()" function.
- add a message with citation information to all "...feature" function (Thanks nikopartanen for the idea).
- add the "atlas.database()" function for creating atlases with rmarkdown.
- add the "isogloss" argument to the "map.feture()" function for creating multiple isoglosses.
- correct Even coordinates,
- correct "is.glottolog()" function.

- add "shape" arguments.
- argument "label.only" is deprecated.

- add the argument "line.type", that could be used for creating the decision boundary of the logistic regression on the map.
- add arguments "line.opacity", "line.label", "line.width".
- add the argument "graticule" to function map.feature().
- add argument "label.only" to function map.feature().

- correct queries of the length one for wals.feature() and afbo.feature() functions. 22
- add arguments for line ("line.lng", "line.lat", "line.color").