Rcompadre 0.2.0

Modifications to improve the class definitions, which are renamed to CompadreDB and CompadreM.
Added generic functionality with accessor methods via ClassUnionMethods. e.g. functions matA, matU, matF, and matC output all A,U,F, or C matrices from a database.
Added cdb_fetch function to obtain the latest version of COMPADRE or COMADRE.
The database object behaves more like a data frame than the complex hierarchical object it is.
Added Tidyverse support so that most dplyr functions can be used with the database (e.g. filter).
Generic subsetting methods including subset, [] now work.
Database can be used with magrittr pipes.
Most functions renamed with cdb_ prefix, followed by verb (e.g. dbCompare becomes cdb_compare and cleanDatabase becomes cdb_flag).
The function cdb_unnest unnests the DB by spreading the matrices into separate list columns.
The function convert2flat is replaced with cdb_flatten, but works on an entire database rather than a single matrix. cdb_unflatten reverses the procedure.
Other functions are also renamed with more intuitive names.
Functions collapseMatrix, identifyReprodStages, rearrangeMatrix, splitMatrix moved to the Rage package.
Added simple vignettes.
Added unit tests for all functions.

Rcompadre 0.1.0

First pre-release version!
Established S4 class CompadreData with definition and methods.
Established S4 class CompadreM with definition and methods.
Functions to checkspecies, check for matrix problems (cleanDatabase),
Functions to manipulate the databases: merge databases (mergeDB), compare database versions (dbCompare), subset the database (subsetDB).
Functions to manipulate matrices: to collapse matrix to a smaller number of stages (collapseMatrix), convert matrix to a "flat" format (convert2flat), calculate the mean F matrix (getMeanMatF), segregate reproductive/non-reproductive stages rearrangeMatrix, split the matrix into submatrices (splitMatrix)
Function to produce a matrix from a string representation stringtomatrix.
Added continuous integration.