v0.0.13

Improve

• The eigenvalue calculation of 3*3 matrix to be done algebraically
• Add tolerance parameter to some method of Matrix
• Add isAlternating and isSkewHermitian method in Matrix class
• Add tridiagHouseholder, tridiagLanczos, hessenberg and hessenbergArnoldi method in Matrix class
• Improve eigenValuesQR method in Matrix class
• Increase value of batch_size in DQN class
• Add detach layer of neuralnetwork
• Add A2C model

Bug fix

• isIdentity and isRegular functions of Matrix class returns incorrect result
• 0 becomes null by negative function of Matrix class
• Fix randn function of Matrix class