[gnome-calculator] Non-fast-forward update to branch 60-split-out-a-backend-library

[Daniel Espinosa Ortiz <despinosa src gnome org>]

The branch '60-split-out-a-backend-library' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  1c9993f... gcalc: added new library gcalc
  1d373e7... gcalc: create a new directory
  c9f2bd9... gcalc: improved build
  56d1b66... gcalc: added core methods for equation parser
  6b072bf... gcalc: added MathVariables classes
  536740d... gcalc: added ErrorResult and properties to Result
  f05a142... gcalc: add MathEquation interface
  873468b... gcalc: added MathEquationManager interface
  8ef4592... calculator ported to GCalc
  e37d7f2... License change from GPL to LGPL
  90d9654... LGPL relicensing: Permission granted by Sami Pietilä
  4f55d76... Added implementation of GCalc main interfaces
  1eb8e68... Enable tests when ui is disable
  7c0ae81... unit-tests: added initial gcalc tests
  7b41806... Re-licensing to LGPL on parser and lexer
  aaefcc7... gcal: removing unnecessary dependencies
  757c898... gcalc: reimplementing equation parsing
  5f0a412... gcalc: porting solver to Expression
  a051e4e... gcalc: fix parsing integer constants
  d18c7de... gcalc: test parse doubles
  1f0bfa1... gcalc: added assign tests
  930b16b... gcalc: implemented parse contant sums
  08658b2... CI: updated dependencies for gcalc
  30c8fbd... gcalc: added Term object
  479e973... gcalc: add support for terms as variables
  4aa3a18... gcalc: added tests for terms as variables and constants
  38ae8db... gcalc: support adding in the middle constant to term
  e76cbd6... gcalc: added support for minus operator
  b6ce213... gcalc: add support for multiply operator parsing
  f04bca7... gcalc: added support for pasing division in terms
  895a115... gcalc: renamed tests for parsing
  6fc1678... gcalc: Solver now has a MathEquationManager
  059aeb5... gcalc: initial infrastructure for equations solving
  c31dc32... gcalc: improved complex numbers handling
  36a1bf5... gcalc: implemented solving constants
  7a35b09... gcalc: evalutes simple constants in terms
  f0b7cef... gcalc: terms evaluates multiply of constants
  87d41bf... gcalc: term evaluates division of constants
  ffd54c5... gcalc: implemented adding terms in polynomial
  9ce1cc5... gcalc: added parenthesis (group) term support
  9d4c236... gcalc: implemented group solving on constants
  cb55015... gcalc: implemented adding grouped terms
  1d6ec81... gcalc: implement multiply group in a term
  3bf501d... gcalc: adding tests for multi-level parenthesis
  cb6e4d6... gcalc: implemented function sqrt()
  9a6084a... gcalc: implemented exp() function
  07b2557... gcalc: implemented log() function
  32a2943... gcalc: implemented sin() function
  c9f2f6d... gcalc: implemented cos() function
  9d91005... gcalc: implemented tan() function
  8faa8e9... gcalc: implemented asin() function
  fc9f9e3... gcalc: implemented acos() function
  af929a3... gcalc: implemented atan() function
  abeb6c4... gcalc: implemented sinh() function
  2e152d5... gcalc: implemented cosh() function
  5c1a235... gcalc: implemented tanh() function
  a09c49f... gcalc: implemented asinh() function
  efbbbf3... gcalc: implemented acosh() function
  6dfce6a... gcalc: implemented atanh() function
  5b33ea4... gcalc: adding default trigonometric functions
  4422e60... gcalc: implemented function parsing
  991e57c... gcalc: implemented evaluating function in a term
  8e88d0f... gcalc: fixed multiple function in polynomial
  3a3fe75... gcalc: fix parsing grouped functions
  ddfa9f5... gcalc: implemented power operator
  c138257... CI: adding gcalc dependencies for libvala
  08b228c... gcalc: renamed Parser to GParser
  2bdecd9... gcalc: adding gee dependency to calculator lib
  788f02a... Fixing main app build
  68019fa... gcalc: variables store are handled per MathEquation
  c698344... gcalc: adding variables tests
  8098aba... gcalc: implement Variable evaluation
  064662c... gcalc: implemented equation solving
  999cde5... gcalc: saving variables values in manager and equations
  af85805... gcalc: fix multiple equations parsing initialization
  e585268... gcalc: adding tests for multiple equations
  994c359... gcalc: improving evaluation/solving error generation
  df2a510... gcalc: added test for polynomial using multiple variables

Commits added to the branch:

  8c121fb... gcalc: add new library for math parsing/solving